Simplify the following expressions and then find the numerical values for x = -2.
(i) 3(2x – 4) + x2 + 5
Answers
Answered by
18
Answer:
x2+3(2x-4)+5
=x2+6x-12+5
=x2+6x-7
now , when we put x=-2
(-2)2+6(-2)-7
=4-12-7
= -8-7
= -15
Answered by
2
Answer:
x2+3(2x-4)+5
=x2+6x-12+5
=x2+6x-7
now , when we put x=-2
(-2)2+6(-2)-7
=4-12-7
= -8-7
= -15
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