simplify 3x(4x-5)+3 and find its value for (a) x=2 (b) x=3
Answers
Answered by
1
Step-by-step explanation:
= (a) 3x(4x-5)+3
= 3×2(4×2-5)+3
= 6(3)+3
= 18+3
= 21
= (b) 3x(4x-5)+3
= 3×3(4×3-5)+3
= 9(7)+3
= 63+3
= 66
Answered by
1
Answer:
3x(4x-5)+3
12x²-15x+3
for x=2 | for x=3
12*(2)²-15*2+3 12*(3)²-15*3+3
(12*4)-(30+3) (12*9)-(45+3)
48-33 108-48
=15 =60
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