Question

Multiply the expressions:

The answer it part (b) is NOT 42 + 9

Answer 1

a. Ans;

`(2y - 1)(3y + 5) \\ 6 {y}^(2) + 10y - 3y - 5 \\ 6 {y}^(2) + 7y - 5`

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b. Ans;

`(2y - 3)^(2) \\ (2y - 3)(2y - 3) \\ 4 {y}^(2) - 6y - 6y + 9 \\ 4 {y}^(2) - 12y + 9`

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c. Ans;

`(x + 2)(x + y - 2) \\ {x}^(2) + xy - 2x + 2x + 2y - 4 \\ {x}^(2) + xy + 2y - 4`

I hope I helped you^_^