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Popular >

factor 7x^2-21

Solution

factor

7 x^{2} - 21

Solution

7 (x^{2} - 3)

Solution steps

7 x^{2} - 21

Rewrite

21

as

7 \cdot 3

= 7 x^{2} - 7 \cdot 3

Factor out common term

7

= 7 (x^{2} - 3)

Popular Examples

simplify (3^{-2})^2 simplify

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

factor 24x+40 factor

24 x + 40

simplify (6a^5b^2)/(4ab^3)simplify

\frac{6 a ^{5} b ^{2}}{4 a b ^{3}}

simplify (2.5)^2 simplify

(2.5)^{2}

x + 1 = \frac{11}{5}

Frequently Asked Questions (FAQ)

What is factor 7x^2-21 ?
The solution to factor 7x^2-21 is 7(x^2-3)