Ask Question
31 May, 06:01

Solve the equation.

3x^2 - 16x = x^2 - 30

A. 3,5

B. - 3/2,5

C. - 5,-3/2

D. - 3,-5

+5
Answers (1)
  1. 31 May, 07:48
    0
    3x^2-16x=x^2-30

    3x^2-x^2-16x+30=0

    2x^2-16x+30=0

    2 * (x^2-8x+15) = 0

    x^2-8x+15=0

    +1 + 1

    we solve it by completing the square

    x^2-2*4x+16=1

    (x-4) ^2=1

    x-4=1 or x-4 = - 1

    +4 + 4 + 4 + 4

    x=5 or x = 3 the answer is A
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “Solve the equation. 3x^2 - 16x = x^2 - 30 A. 3,5 B. - 3/2,5 C. - 5,-3/2 D. - 3,-5 ...” in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers