factorise in bracket a + b bracket close cube minus 8
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Hi friend!!
(a+b)³ - 8
→ (a+b)³ - (2)³
(x-y)³ = (x-y) (x²+xy+y²)
→ (a+b-2) {(a+b)² + (a+b)(2) + (2)²}
→ (a+b-2) {a²+2ab+b² + 2a+2b + 4}
Hope it helps
(a+b)³ - 8
→ (a+b)³ - (2)³
(x-y)³ = (x-y) (x²+xy+y²)
→ (a+b-2) {(a+b)² + (a+b)(2) + (2)²}
→ (a+b-2) {a²+2ab+b² + 2a+2b + 4}
Hope it helps
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