Question

Write the function in standard form.
f(x) = - 2(x - 9)2 + 14
f(x)=

Answer 1

f(x) = -2 (x-9)2 + 14
= -4(x-9) + 14
= -2 [ 2(x-9) -7 ]
= -2 (2x -18 -7)
= -2 (2x -25)