Question

the formula of (x + 3) × (x + 3) ncert ex 9.5 class 8​

Answer 1

Answer:

Step-by-step explanation:

Any number multiplied by itself gives its square.

a * a = $a^{2}$

so, (x + 3) × (x + 3) = $(x+3)^{2}$

We can now expand it using $(a+b)^{2} = a^{2} + 2ab + b^{2}$

$(x+3)^{2} = x^{2} + 2*x*3 + 3^{2} \\= x^{2} +6x +9$