What is factor 4x^2+20x+21 ?

The solution to factor 4x^2+20x+21 is (2x+3)(2x+7)

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factor 4x^2+20x+21

factor

4 x^{2} + 20 x + 21

(2 x + 3) (2 x + 7)

Solution steps

4 x^{2} + 20 x + 21

Break the expression into groups

= (4 x^{2} + 6 x) + (14 x + 21)

Factor out

2 x

from

4 x^{2} + 6 x : 2 x (2 x + 3)

Factor out

7

from

14 x + 21 : 7 (2 x + 3)

= 2 x (2 x + 3) + 7 (2 x + 3)

Factor out common term

2 x + 3

= (2 x + 3) (2 x + 7)

1 - e^{- 8}

- 5 \times \frac{1}{3}

- 5 \times \frac{1}{4}

9 b + 21

1 + (1 - 0.96) \cdot 8