What is expand (x^2-1)(4+sqrt(x+15)) ?

The solution to expand (x^2-1)(4+sqrt(x+15)) is 4x^2+x^2sqrt(x+15)-4-sqrt(x+15)

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expand (x^2-1)(4+sqrt(x+15))

expand

(x^{2} - 1) (4 + x + 15)

4 x^{2} + x^{2} x + 15 - 4 - x + 15

Solution steps

(x^{2} - 1) (4 + x + 15)

Apply FOIL method

(x^{2} - 1) (4 + x + 15) : 4 x^{2} + x^{2} x + 15 - 4 - x + 15

= 4 x^{2} + x^{2} x + 15 - 4 - x + 15

\frac{\frac{d}{d x} ( \frac{1}{x + 1} ) - 1}{in ( 2 + x )}

(x - 1 - 2 x - 3)^{2}

\frac{y ( 1 - x )}{x ( 2 y - 1 )}

[e^{(- 4 t)} U (t - 3)]

What is expand (x^2-1)(4+sqrt(x+15)) ?
The solution to expand (x^2-1)(4+sqrt(x+15)) is 4x^2+x^2sqrt(x+15)-4-sqrt(x+15)