Question

2. Verify that (11pq +49)2 – (11pq - 49)2 = 176pq2

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Answer 1

Step-by-step explanation:

121p²q²+2401+1078pq-121p²q²-2401+1078pq

=2146pq

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Answer 2

$\huge\bold\blue{Answer}$

= (11pq + 4q + 11pq – 4q) × (11pq + 4q – 11pq + 4q) [using a² – b²= (a – b) (a + b), here a = 11pq + 4q and b = 11 pq – 4q]

= (22pq) (8q)

= 176 pq2

=RHS(proved)

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