Use the square root property to solve the quadratic equation.
-$3 x ^ { 2 } - 21 x = - 30$
A)-2, -5
B)3, 2
C)3, -5
D)2, 5

Name: Use the square root property to solve the quadratic equation. -$3 x ^ { 2 } - 21 x = - 30$ A)-2, -5 B)3, 2 C)3, -5 D)2, 5
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Question

Quizplus · Accepted Answer

First, rewrite the equation as $3x^2 - 21x + 30 = 0$. Divide the entire equation by 3 to simplify: $x^2 - 7x + 10 = 0$. Factor the quadratic to $(x - 2)(x - 5) = 0$. Solving for x gives the solutions x = 2 and x = 5.

Use the Square Root Property to Solve the Quadratic Equation 3x2−21x=−303 x ^ { 2 } - 21 x = - 303x2−21x=−30

Use the Square Root Property to Solve the Quadratic Equation $3 x ^ { 2 } - 21 x = - 30$