Factories:(i) 12x + 15(ii) 14m – 21(iii) 9n – 12n2

Q1 of 137 Page 99

Factories:
(i) 12x + 15

(ii) 14m – 21

(iii) 9n – 12n²

(i) 12x + 15

Taking 3 as common from the whole, we get,

12x + 15 = 3(4x + 5).

(ii) 14m – 21,

Taking 7 as common from the whole, we get,

14m – 21 = 7(2m – 3)

(iii) 9n – 12n²,

Taking 3n as common from the whole, we get,

9n – 12n² = 3n (3 – 4n).

Factories:

i. 16a² – 24ab

ii. 15ab² – 20a²b

iii. 12x²y³ – 21x³y²

Factories:

(i) 24x³ – 36x²y

(ii) 10x³ – 15x²

(iii) 36x³y – 60x²y³z

Factories:

i. 9x³ – 6x² + 12x

ii. 8x³ – 72xy + 12x

iii. 18a³b³-27a²b³+36a³b²

Factories:

i. 14x³ + 21x⁴y – 28x²y²

ii. - 5 – 10t + 20t²