3 years ago

What is the best first step in solving the equation 3x2 + 8x = -5?

1 answer:

5 0

I would assume it would be dividing both sides by three although if someone were to actually solve this I would say multiply 2 and 3 together first.

Hope this helps :)

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What is the solution to the following system of equations?

ICE Princess25 [194]

Answer: B. (-6, 5)

Step-by-step explanation:

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3 years ago

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6. Let A and B be nxn matrices . Compute (A + B) (A + B). Explain all steps.

Pie

Answer:

(A+B)(A+B)=A.A+B.A+A.B+B.B

Step-by-step explanation:

Given that matrices A and B are nxn matrices

We need to find (A+B)(A+B)

For understanding the multiplication of matrices let'take A is mxn and B is pxq matrices,we can multiple only when n=p,so our Ab matrices will be mxq.

We know that that in matrices AB is not equal to BA.

Now find

(A+B)(A+B)=A.A+B.A+A.B+B.B

So from we can say that (A+B)(A+B) is not equal to A.A+2B.A+B.B because AB is not equal to BA in matrices.

So (A+B)(A+B)=A.A+B.A+A.B+B.B

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3 years ago

Y=4x+8 y=-x-7 solve by substitution

nikklg [1K]

Step-by-step explanation:

Alrighty! here you go image.