Factorise: 14 (3y-5z) 3 +7(3y-5z) 2

   143y - 5z3 + 73y - 5z2=73y - 5z223y - 5z + 1=73y - 5z26y - 10z + 1=73y - 5z3y - 5z6y - 10z + 1

  • 4

14 (3y -5z) 3 + 7 (3y-5z) 2 = (3y-5z)2 {14(3y-5z) +7} =(3y-5z)2{42y -70z +7}

= 7 (3y-5z)2(6y -10z +1) (Ans)

  • 2
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