What number would need to be added to both sides in order to complete the square? 3x² + 12x — 15 = 21

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asked Oct 12, 2021 90.5k views

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Neil Sarkar · Answer 1 · 2021-10-17T08:01:34+0000

Answer:

4

Explanation:

Divide the coefficient of the x term by 2, then square the result. This number will be added to both sides of the equation. For the quadratic equation x2+4x=96, the coefficient of the x term is 4.

What number would need to be added to both sides in order to complete the square? 3x² + 12x — 15 = 21

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