Question

4. Evaluate :
(ii) (4a + 3b)2 – (4a - 3b)2 + 48 ab.
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Answer 1

Answer:

put formula (a+b)^2 or (a-b)^2+48ab

Answer 2

Answer:

=[(4a)^+(3b)^+2(4a)(3b)]-[(4a)^+(3b)^-2(4a)(3b)]+48ab

=[16a^+9b^+24ab]-[16a^+9b^-24ab]+48ab

=16a^+9b^+24ab-16a^-9b^+24ab+48ab

=96ab