Question

Use a suitable identity find the product:-

(i) [x+3] [x+3]

(ii) [2y+5] [2y+5]

(iii) [3a+4b] [3a+4b]
​

Answer 1

Answer:

i) x² + 6x + 9

ii) 4y² + 20y + 25

iii) 9a² + 24ab + 16b²

Step-by-step explanation:

I) [x+3] [x+3]

(x+3)²

x² + 2.x.3. + 3²

x² + 6x + 9

ii) (2y+5)²

(2y)² + 2.2y.5 + (5)²

4y² + 20y + 25

iii) (3a+ 4b)²

(3a)²+ 2.3a.4b + (4b)²

9a² + 24ab + 16b².

Hope it helps.

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