(4b^2-8b-3)
1st step: 3b^2– (-b^2) = 4b^2
2nd step: -5b – (3b) = -8b
3rd step: 1 – (-4) = -3
C. carbon is found in all living things
a. heat is trapped in carbon
Answer:78phy
gigh[ood9..8d55.5.5.5.5.5.5.5.6.s7s47.4
Step-by-step explanation:
width = w
length = w+4
Area = l*w
substitute
96 = (w+4) *w
distribute
96 = w^2 +4w
subtract 96 from both sides
0 = w^2 +4w -96
factor
0=(w+12) (w-8)
w+12=0 w-8=0
w=-12 w=8
cannot have negative width
w=8
l=12
Answer: width =8 cm
length = 12cm
