Question

Soit B(x)=4x²-12x. Résoudre dans R l'équation B(x)=-9

Answer 1

B(-9) = 432

Explanation:

B(x) = 4x² - 12x

B(-9) = 4(-9)² - 12(-9)

B(-9) = 4(81) + 108

B(-9) = 324 + 108

B(-9) = 432

Answer 2

432

Explanation:

B(x) = - 9

Replacing the value of x in the equation,

4x² - 12x

= 4 * (-9)² - 12 * (-9)

= 4 * 81 + 108

= 324 + 108

= 432

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hope this helps!