14(3y-5z)*2 - 21(5z-3y)*3 factorise the following by regrouping
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Answer:
14(3y - 5z)^3 + 7(3y - 5z)^2
= 7[2(3y - 5z)^3 + (3y - 5z)^2]
= 7(3y - 5z)^2[2(3y - 5z) + 1]
= 7(3y - 5z)^2[2(3y) - 2(5z) + 1]
= 7(3y - 5z)^2(6y - 10z + 1)
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