Simplify 3x (4x-5) + 3 and find its values for (i) x = 3, (ii) x = -2
(5marks)
meherg21:
off course its help full for you
Answers
Answered by
0
Answer:
(I) 66
(ii) 81
Step-by-step explanation:
3x (4x-5) + 3
(i) x = 3
=3(3)[4(3)-5]+3
=9[12-5]+3
=9[7]+3
=63+3
=66
3x (4x-5) + 3
(ii) x = -2
=3(-2)[4(-2)-5]+3
=-6[-8-5]+3
=-6[-13]+3
=78+3
=81
Answered by
1
Step-by-step explanation:
3x*4x-3x*5+3
12x^2-15x+3
(1) x = 3
12*3*3-15*3+3
108-45+3
111-45
66
(2) x = -2
(12*-2*-2)-(15*-2)+3
48+30+3
48+33
81
hope it's helpful
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