Question

Simplify 4a²-b²
Factorize2x²-x-3
Simplify 25x²-1

Answer 1

Answer:

(a) a^2-b^2=(a+b) (a-b)

a^2-ab+ba-b^2

=a^2-ab+ab-b^2

=a^2-b^2

4 is the square of 2

a^2 is the square of a^1

b^2 is the square of b^1

factorisation:(2a+b)(2a-b)

(b) 2x^2-x-3

=2x^2-3x+2x-3

=x(2x-3)+1(2x-3)

(x+1)(2x-3)

(C)

25 is the square of 5

(5x+1)(5x-1)

Answer 2

Answer:

a) simplify

${4a}^{2} - {b}^{2}$

$( {2a)}^{2} - {b}^{2}$

$formula (a + b)(a - b) = {a}^{2} - {b}^{2}$

$(2a - b)(2a + b)$