Question

-x2 + 5 = (4x - 1)2

What is this quadratic equation written in standard form?

A. 17x2 - 8x - 4 = 0
B. 17x2 - 8x + 6 = 0
C. 15x2 - 8x + 6 = 0
D. 15x2 - 8x - 4 = 0

Answer 1

i'm assuming you mean -x^2 +5 = (4x-1)^2 ?

Answer 2

yeah

Answer 3

to do this, just expand the right side by doing (4x-1)*(4x-1) which = 16x^2-8x+1

then add that to the left side

so (-x^2+5) + (16x^2-8x+1) which = 15x^2-8x+6... so your answer is C

Answer 4

thanks