Evaluate using slitalelo identities
[ 2a - 3b.] 2
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7
( 2a - 3b )²
Using identity ( a - b )² = a² - 2ab + b²
(2a)² - 2 x 2a x 3b + (3b)²
4a² - 12ab + 9b²
Answered by
4
(a-b)²=a²-2ab+b²
2a²-2×2a×3b+(3b)²
4a²-12ab+9b²
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