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Popular >

factor a^2-4

Solution

factor

a^{2} - 4

Solution

(a + 2) (a - 2)

Solution steps

a^{2} - 4

Rewrite

4

as

2^{2}

= a^{2} - 2^{2}

Apply Difference of Two Squares Formula:

x^{2} - y^{2} = (x + y) (x - y)

a^{2} - 2^{2} = (a + 2) (a - 2)

= (a + 2) (a - 2)

Popular Examples

simplify log_{11}(11)simplify

lo g_{11} (11)

9sqrt(2)^2+x^2=15sqrt(2)^2

9 2^{2} + x^{2} = 15 2^{2}

(2n)/3+1/2 =(3n-1)/6

\frac{2 n}{3} + \frac{1}{2} = \frac{3 n - 1}{6}

(1/2+3/5)\div 3/7

(\frac{1}{2} + \frac{3}{5}) \div \frac{3}{7}

a^{2} + 3 a = 0

Frequently Asked Questions (FAQ)

What is factor a^2-4 ?
The solution to factor a^2-4 is (a+2)(a-2)