Question

what must be add to 5 x square - 5 x + 3 z to get x square

Answer 1

coefficient of x square is 5...so 5may be the answer

Answer 2

Answer:

We have to add $-4x^2+5x-3z$ in the given expression to get x².

Step-by-step explanation:

The given expression is

$5x^2-5x+3z$

Let y be added to get x².

$5x^2-5x+3z+y=x^2$

Subtract 5x² from both sides.

Add 5x on both the sides.

$3z+y=-4x^2+5x$

Subtract 3z from both sides

$y=-4x^2+5x-3z$

Therefore we have to add $-4x^2+5x-3z$ in the given expression to get x².