Question

Simplify the following expressions and find the value if a=1,b=2,c=-1

i) 3b(a-1)+2a(c-b)

ii)
$3 {a}^{2} c - 4bc + 3ab - ( - bc - 7c)$
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Answer 1

Answer:

3(2)(1-1)+2(1)(-1-2)

6(0)+2(-3)

0-6

-6

Answer 2

Answer:

I) -6

ii) 2

Step-by-step explanation:

I) 3(2)(1-1)+2(1)(-1-2)

0+2(-3)

-6

ii) 3(1)²(-1)-4(2)(-1)+3(1)(2)+(2)(-1)+7(-1)

=-3+8+6-2-7

=2