Solve (a+2)(a-2)(a^2+9)

$$( a + 2 ) ( a - 2 ) ( a ^ { 2 } + 9 )$$

Evaluate

$$a^{4}+5a^{2}-36$$

Solution Steps

Use the distributive property to multiply a+2 by a-2 and combine like terms.

$$\left(a^{2}-4\right)\left(a^{2}+9\right)$$

Use the distributive property to multiply a^{2}-4 by a^{2}+9 and combine like terms.

$$a^{4}+5a^{2}-36$$

Expand

$$a^{4}+5a^{2}-36$$

Solution Steps

Use the distributive property to multiply a+2 by a-2 and combine like terms.

$$\left(a^{2}-4\right)\left(a^{2}+9\right)$$

Use the distributive property to multiply a^{2}-4 by a^{2}+9 and combine like terms.

$$a^{4}+5a^{2}-36$$