What is simplify-d(d-2)-d(d+3) ?

The solution to simplify-d(d-2)-d(d+3) is -2d^2-d

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simplify-d(d-2)-d(d+3)

simplify

- d (d - 2) - d (d + 3)

- 2 d^{2} - d

Solution steps

- d (d - 2) - d (d + 3)

Expand

- d (d - 2) : - d^{2} + 2 d

= - d^{2} + 2 d - d (d + 3)

Expand

- d (d + 3) : - d^{2} - 3 d

= - d^{2} + 2 d - d^{2} - 3 d

Group like terms

= - d^{2} - d^{2} + 2 d - 3 d

Add similar elements:

- d^{2} - d^{2} = - 2 d^{2}

= - 2 d^{2} + 2 d - 3 d

Add similar elements:

2 d - 3 d = - d

= - 2 d^{2} - d

\frac{( 3 ^{n + 1} + 3 ^{n} )}{( 3 ^{n + 3} - 3 ^{n + 1} )}

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

(x - 3) (x + 2) (x + 3) (x + 8) + 56

\frac{5}{sin ^{2} ( a )} - 5 cot^{2} (a)

\frac{a}{2} + \frac{a ^{3}}{2} + \frac{a ^{5}}{2}

What is simplify-d(d-2)-d(d+3) ?
The solution to simplify-d(d-2)-d(d+3) is -2d^2-d