Question

Express each of the following expressions in the form(x+a)²+b.
(a) x²+12x
(b) x²-6x+1
(c) x²+3x-2
(d) x²+9x-1
(e) x²+1/2x
(f) x²-2/9x
(g)x²+ 0.2x
(h) x²-1.4x

Answer 1

Answer:

(a) x^2+12x

= x^2+9x+9-9+3x

= (x+3)^2 +(3x-9)