simplify (2+x)^3-8

Solution

simplify

(2 + x)^{3} - 8

x^{3} + 6 x^{2} + 12 x

Solution steps

(2 + x)^{3} - 8

Expand

(2 + x)^{3} : 8 + 12 x + 6 x^{2} + x^{3}

= 8 + 12 x + 6 x^{2} + x^{3} - 8

Group like terms

= x^{3} + 6 x^{2} + 12 x + 8 - 8

Subtract the numbers:

8 - 8 = 0

= x^{3} + 6 x^{2} + 12 x

0^{2} + (7 - (- 5))^{2}

- 5.9 x - 4 + 2.3 x - 6

\frac{30}{4} \div 7

\frac{2.0 1 ^{2} - 4}{2.01 - 2}

100 x^{4} - 121 y^{6}