展开 (2x+3)(x-6)

解答

展开

(2 x + 3) (x - 6)

2 x^{2} - 9 x - 18

求解步骤

(2 x + 3) (x - 6)

Apply FOIL method

(2 x + 3) (x - 6) : 2 x^{2} - 9 x - 18

= 2 x^{2} - 9 x - 18

e x p an d (x + 5) (2 x^{2} - 3 x + 3)

s im pl i f y \frac{1.2 \cdot 1 0 ^{7}}{2 \cdot 1 0 ^{3}}

s im pl i f y 7 \times 7 \times 7 \times 7 \times 7

s im pl i f y 3 x - (\frac{1}{3} x + 1)

s im pl i f y 9.8 n - (9 p + 9.9)