Question

simplify these expressions and find their values, if x=3,a=-1,b=-2.

(a) 3a+5-8x+1

(b) 10x-3b-4a-5b 2square ​

Answer 1

Answer:

(a) -21, (b) 80

Step-by-step explanation:

We have x=3, a=1, b=-2

(a) 3a+5-8x+1

=3×(-1)+5-8×3+1

=-3+5-24+1

=-21

(b) 10x-3b-4a-5b×2^(2)

=10×3-3×(-2)-4×(-1)-5×(-2)×4

=30+6+4+40

=80