the formula of (x + 3) × (x + 3) ncert ex 9.5 class 8
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Answer:
Step-by-step explanation:
Any number multiplied by itself gives its square.
a * a = [tex]a^{2}[/tex]
so, (x + 3) × (x + 3) = [tex](x+3)^{2}[/tex]
We can now expand it using [tex](a+b)^{2} = a^{2} + 2ab + b^{2}[/tex]
[tex](x+3)^{2} = x^{2} + 2*x*3 + 3^{2} \\= x^{2} +6x +9[/tex]