Question

Bentuk paling sederhana dari 8x-21+5(-x^2+6)+8(x+1)^2 adalah

Answer 1

Karena demikian:
(x+1)² = x² + 2x + 1
Diperoleh:

Answer 2

=8x-16(-x^2+6)+8(x+1)(x+1)
=8x-16(-x^2+6)+8(x^2+x+x+1)
=8x-16(-x^2+6)+8(x^2+2x+1)
=8x^3+48x+16x^2-96+8x^2+
16x+8
=8x^3+16x^2+8x^2+48x+16x -
96+8
=8x^3+24x^2+64x-88