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-3 -24point) If A = 4 -2then336AT241812241831 -18-24...

Question

-3 -24point) If A = 4 -2then336AT241812241831 -18-24

-3 -2 4 point) If A = 4 -2 then 3 3 6AT 24 18 12 24 18 31 - 18 -24



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If $\left|\begin{array}{cc}2 & -4 \\ 9 & \mathrm{~d}-3\end{array}\right|=4$, then $\mathrm{d}=$ ____. (1) 13 (2) 26 (3) $-13$ (4) $-26$

Okay, so this problem here is provided, and it asks us to justify each one of these steps. And so the first up here, you'll notice that, um, we've got a three. A divide by two and a six divided by five. So to get to this three A by itself it looks like both sides were multiplied by two, which is indeed the case. This gets multiplied by two. That goes away, right? So I'll do this and rest. So if it gets multiplied by two are to this becomes a 12. And this the twos cure cancel. And this is called the Multiplication property of Equality. And then here in order to get that three away here we've divided both sides by three. And that's the same. It's just multiplying here by 1/3. And so you can see that these cancel this becomes a four, and that's what happens here. And this becomes the A. And this is the division Equality Property

In this problem we have given about tricks eight, which is equals room. Pray for four by we need to compute in goes right, dog Millie, Debt Metrics e and I. We get 344 pipes flash 1001 Use reparations to convert. Mattress is less I indoor metrics. I slash eight years by applying our own changes to I do yes, minus one into album. We get one month for five minus 1001 No, By applying, I don't tend. Use to minus four into our island. Yes, Active. Make it Brandy was eagle one slash minus 114 Minus tree. Finally we applied Are one changes minus are too Knows that one big. Get 100 bon slash minus five for full My ministry Since the land last my tricks is in the form Move. I slash Inverse Therefore being girls were beak was too minus 54 or minus tree. Now we verify the answer but showing indoor a inverse is it was dried into demonstrates on a Inglis into it is always weak was right into dimension Find the burdock cough into eating goes we get the resulting matter extractors van 001 It is equals true identity metrics on. By finding the product off a English into a metrics, we get the resulting Mataric status 1001 It is also equals wide under the mattress and the paint result in verse is equals true minus five full or minus tree. It's got a

Here the line X -2. And Why Mine -3. Why History X -2. His line. We're all the value of XR -2. So this is a Vertical Life x equals 2 -2. And why is please those lines were Y. Valuers three. So this weekend plotters, Why it goes to three line. Now this is our intersection point. We can see the intersection point is Just where the value of X -2. So -2, comma and y value of three. The intersection point I. P. We can retest minus two committee.

So here we are given that if 11 minus four, eight and minus train too minus X. For -8 and White. Yeah is equal to minus off 2, 3 6 and nine. Then we need to find out what is to expense why is equal to Okay so here we can do directly the matrix multiplication. And we get this asked -11 x plus 32 44 minus for white -8 x plus 24 and 30 to minus freeway is equal to negative of these studies, negative negative three, -6 and -9. Okay, since it is given what are equal, therefore we can equate it storm. That is -11 x plus 32 Is equal in 82. That is -11 X is equal to 34, negative 34. Therefore X is equal to 34 x 11 and similarly 30- -3 Ways. A Grenadier nine. Therefore why is equal to 41 x three. So now what we need to find out what is two X -Y is equal to that is 30 402, is 68 by 11 -41 by three. Which is equal to that is on solving we get that is equal to fight.


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