Question

4xsquared-1 factories

Answer 1

(2x - 1)(2x + 1)

Explanation:

4x² - 1

is a difference of squares and factors in general as

a² - b² = (a - b)(a + b) , then

4x² - 1

= (2x)² - 1²

= (2x - 1)(2x + 1)

Answer 2

That is a quadratic equation and must be factorized using two brackets. It is just a little confusing to recognize it as a quadratic as the middle x value is not there so we treat it as 0 - which means the two numbers must cancel each other out:

(2x + 1) (2x - 1)

Explanation:

help