Answer:
18
Step-by-step explanation:
Do it by count how many side are there by the squares
<span>2n^2 - 7n - 3 = 0
a = 2
b = -7
c =-3
Then use the Quadratic formula:
x = [-b +-sqroot(b^2 -4*a*c)] / 2*a
</span>
Factor out the common terms in the first two terms, then in the last two terms;
3x^2(b - 3x) - (b - 3x)
Factor out the common term b - 3x
<u>= (b - 3x)(3x^2 - 1)</u>
Answer:
60
Step-by-step explanation:
first you have to find 50% of 40 but multiplying 40 by .5 to get 20. then you add 20 to 40 to get your answer
Answer:
a. -1
Step-by-step explanation:
Simply the equation: 3x+x+8=4
1st step: 4x+8=4
2nd step: 4x=4-8
3rd step: x=
4th step: x= -1