Question

2. Factorise
a) 6p(p-5) +5(p-5)
b) 14(3y-5z)³ + 7(3y-5z)²​

Answer 1

Answer:

a)(6p+5)(p-5)

b)(3y-5z)(3y-5z)(42y-70z+7)

Answer 2

Answer:

a) (6p+5) (p-5)

b) 14(3y.3y.3y-5z.5z.5z-3.3y.5z(3y+5z) +7(3y.3y-5z.5z-2.3y.5z)

14(27y-125z-45yz(3y+5z) +7(9y-25z-30yz)

14(27y-125z-135yz.y-225yz.z) +63y-175z-210yz

378y-1750z-1890yz.y-3150yz.z+63y-175z-210yz

441y-2500-210-1890yz.y-3150yz.z

. means multiply

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