Question

ities, factorise the following
(ii) x2 - 4x + 4
factorise​

Answer 1

Answer:

(x-2)²

Step-by-step explanation:

x²-4x+4

=x²-2x-2x+4

=x(x-2)-2(x-2)

=(x-2)(x-2)

=(x-2)²

Hope u like it...

Answer 2

Question

Factories : x^2 -4x + 4

Answer

x^2 -4x+4

=> x^2-( 2+2)x+4

=> x^2 - 2x - 2x + 4

=> x(x-2)-2(x-2)

=> (x-2)(x-2)

=> ( x - 2)^2

we solved this by using the identity iv . (X+a)(X+b)

Additional explanation :

Identity 1 : (X+y)^2 = x^2 + 2xy + y ^2

identity 2 : (x-y)^2 = x^2 - 2xy + y ^2

identity 3 : x^2 - y ^2 = (X+y)(x-y)

identity 4 : (X+a)(X+b) = x^2 +2(a+b)X + ab