Question

What must be added to 5x³-2x²+6x+7 to make the sum x³+3x²-x+1?​

Answer 1

Answer:

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Answer 2

From the given question the correct answer is:

Given:

5x³-2x²+6x+7

the sum x³+3x²-x+1

To find:

What must be added to 5x³-2x²+6x+7 to make the sum x³+3x²-x+1?

Solution:

Let, the X1 will be added to the  5x³-2x²+6x+7 so,

we get x³+3x²-x+1

we can write this like,

5x³-2x²+6x+7 +  X1= x³+3x²-x+1

from this, transfer 5x³-2x²+6x+7  on right-hand side

we get,

X1 =  x³+3x²-x+1  - (5x³-2x²+6x+7)

X1=  x³+3x²-x+1 -5x³+2x²-6x-7

X1=-4x³+5x²-7x-6

Thus, we get the expression that was added to the  5x³-2x²+6x+7 so we get

x³+3x²-x+1

Final Answer:

-4x³+5x²-7x-6 must be added to 5x³-2x²+6x+7 to make the sum x³+3x²-x+1