What is factor d^2-2d-15 ?

The solution to factor d^2-2d-15 is (d+3)(d-5)

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factor d^2-2d-15

factor

d^{2} - 2 d - 15

(d + 3) (d - 5)

Solution steps

d^{2} - 2 d - 15

Break the expression into groups

= (d^{2} + 3 d) + (- 5 d - 15)

Factor out

d

from

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

Factor out

- 5

from

- 5 d - 15 : - 5 (d + 3)

= d (d + 3) - 5 (d + 3)

Factor out common term

d + 3

= (d + 3) (d - 5)

3 x + 5 = x - 3

2 x - 3 \leq 3

2 x + 1 > 0

\frac{9}{6} = \frac{x}{8}

5 (9 - z) + 3 = 23