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

User Randika Vishman
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6 votes

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.

User Neil Sarkar
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