Question

3x(4x-5) +3 and find the value for x=3

Answer 1

Ans: 3x(4x-5) +3
=> 3 (3) [4(3)-5] + 3
=> 9 (12-5) +3
=> 9(7) +3
=> 63 + 3
=> 66

Hope it helps...!!

Answer 2

Hey mate here is your answer

(a) x = 3

=> 3x(4x-5)+3

=> 3*3(4*3 - 5) + 3

=> 9(12-5)+3

=> 9*7 + 3

=> 63 + 3

=> 66

Now,
(b) x = 1/2

=> 3x(4x-5)+3

=> 3*1/2(4*1/2 - 5) + 3

=> 3/2 (2 - 5) + 3

=> 3/2*(-3) + 3

=> -9/2 + 3

=> (-9 + 6)/2

=> -3/2

hope it help
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