Question

just answer tick ones..​

Answer 1

SOLUTION:-

1) 2x²-9x+9

➡️ 2x²-(6+3)x+9

➡️ 2x²-6x-3x+9

➡️ 2x(x-3)-3(x-3)

➡️ (x-3)(2x-3)

_____________________

2) x³-64y³

➡️ Using identity a³-b³= (a-b) (a²+ab+b²)

➡️ x³-64y³

➡️ x³-(4y)³

➡️ (x-4y)(x²+4y×x+(4y)²

➡️ (x-4y)(x²+4xy+16y²)

_____________________

3) p³-(p+1)³

➡️ Using identity a³-b³= (a-b) (a²+ab+b²)

➡️ p³-(p+1)³

➡️ (p-(p+1)(p²+(p)(p+1)+(p+1)²)

➡️(p-p-1)(p²+p²+p+p²+2p+1)

➡️( -1)(3p²+3p+1)

➡️ p³-(p+1)³= (-1)(3p²+3p+1)

___________________________

Answer 2

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