Question

please do by spilling the middle term ​

Answer 1

$\huge\bold{ANSWER~:}$

$(29) \\ \\ = 18 {x}^{2} + 3x - 10 \\ \\ = 18 {x}^{2} +15x - 12x - 10 \\ \\ =3x(6x + 5) - 2(6x + 5) \\ \\ = (6x + 5)(3x - 2)$

$(30) \\ \\ = 2 {x}^{2} + 11x - 21 \\ \\ = 2 {x}^{2} + 14x - 3x - 21 \\ \\ =2x(x + 7) - 3(x + 7) \\ \\ = (x + 7)(2x - 3)$

$(31) \\ \\ = 15 {x}^{2} + 2x - 8 \\ \\ = 15 {x}^{2} + 12x - 10x - 8 \\ \\ = 3x(5x + 4) - 2(5x + 4) \\ \\ = (5x + 4)(3x - 2)$

${\large\bold\color{Red}{Answer~is~(6x+5)(3x-2) }}$

${\large\bold\color{Red}{Answer~is~(x+7)(2x-3) }}$

${\large\bold\color{Red}{Answer~is~(5x+4)(3x-2) }}$

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${\large\bold\color{Red}{Thank~you }}$