Q2 of 157 Page 22

Using a suitable identity, find each of the following products:
(2m + 3) (2m + 3)

Given (2m + 3) (2m + 3) = (2m + 3)²

We know that

(a+ b)² = a² + b² + 2a×b

⇒ (2m + 3) (2m + 3) = ((2m)² + 3² + 2× 2m×3)

⇒ (2m + 3) (2m + 3)= 4m² + 9 + 12m

Choose the correct answer for the following:

m² + (c + d) m + cd = ______

Using a suitable identity, find each of the following products:

(x + 3) (x + 3)

Using a suitable identity, find each of the following products:

(2x – 5) (2x – 5)

Using a suitable identity, find each of the following products:

Questions · 157

1. Algebra

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Using a suitable identity, find each of the following products:(2m + 3) (2m + 3)