What is factor r^2+9r+20 ?

The solution to factor r^2+9r+20 is (r+4)(r+5)

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factor r^2+9r+20

factor

r^{2} + 9 r + 20

(r + 4) (r + 5)

Solution steps

r^{2} + 9 r + 20

Break the expression into groups

= (r^{2} + 4 r) + (5 r + 20)

Factor out

r

from

r^{2} + 4 r : r (r + 4)

Factor out

5

from

5 r + 20 : 5 (r + 4)

= r (r + 4) + 5 (r + 4)

Factor out common term

r + 4

= (r + 4) (r + 5)

\frac{1}{2} \cdot \frac{5}{4}

8 \cdot \frac{15}{5} - (5 + 9)

∣ x - 4 ∣ \geq x^{2} - 7 x + 12

1 - (\frac{11}{61})^{2}

7 y^{2} - 6 y = 0