Which equations are true for x = - 2 and x = 2? Check all that apply.

A. x2 - 4 = 0

B. x2 = - 4

C. 3x2 + 12 = 0

D. 4x2 = 16

E. 2 (x - 2) 2 = 0

Question

Mathematics

Mohammad Glenn

8 April, 07:55

Which equations are true for x = - 2 and x = 2? Check all that apply.

A. x2 - 4 = 0

B. x2 = - 4

C. 3x2 + 12 = 0

D. 4x2 = 16

E. 2 (x - 2) 2 = 0

+1

Answers (1)

Know the Answer?

Max Berger · Answer 1

А. х²-4=0; х²=4; х=±2, true. B. x²=-4; there is no solution. C. 3x²+12=0; 3x²=-12; x²=-4; there is no solution. D. 4x²=16; x²=4; x=±2, true. E. 2 (x-2) ²=0; 2 (x²-4x+4) = 0; 2x²-8x+8=0; x²-4x+4=0; x1=2; x2=2. False. The answer: A, D.

Which equations are true for x = - 2 and x = 2? Check all that apply.A. x2 - 4 = 0B. x2 = - 4C. 3x2 + 12 = 0D. 4x2 = 16E. 2 (x - 2) 2 = 0

Which equations are true for x = - 2 and x = 2? Check all that apply.

A. x2 - 4 = 0

B. x2 = - 4

C. 3x2 + 12 = 0

D. 4x2 = 16

E. 2 (x - 2) 2 = 0