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Popular >

factor 21a^2-135a-84

Solution

factor

21 a^{2} - 135 a - 84

Solution

3 (7 a + 4) (a - 7)

Solution steps

21 a^{2} - 135 a - 84

Factor out common term

3 : 3 (7 a^{2} - 45 a - 28)

= 3 (7 a^{2} - 45 a - 28)

Factor

7 a^{2} - 45 a - 28 : (7 a + 4) (a - 7)

= 3 (7 a + 4) (a - 7)

Popular Examples

simplify (20-28i)/(-4+4i)simplify

\frac{20 - 28 i}{- 4 + 4 i}

simplify \sqrt[5]{x^{12}}simplify

expand (-x+4)(3x^2-2x-7)expand

(- x + 4) (3 x^{2} - 2 x - 7)

simplify 5\times 3/4 simplify

5 \times \frac{3}{4}

factor+t^3+64 factor

+ t^{3} + 64

Frequently Asked Questions (FAQ)

What is factor 21a^2-135a-84 ?
The solution to factor 21a^2-135a-84 is 3(7a+4)(a-7)