I'll just factor the above equation.
x² + 18x + 80
x² ⇒ x * x
80
can be:
1 x 80
2 x 40
4 x 20
5 x 16
8 x 10 Correct pair
(x+8)(x+10)
x(x+10) +8(x+10) ⇒ x² + 10x + 8x + 80 = x² + 18x + 80
x+8 = 0
x = -8
x+10 = 0
x = -10
x = -8
(-8)² + 18(-8) + 80 = 0
64 - 144 + 80 = 0
144 - 144 = 0
0 = 0
(-10)² + 18(-10) + 80 = 0
100 - 180 + 80 = 0
180 - 180 = 0
0 = 0
I think the algebra tiles will not be a good tool to use to factor the quadratic equation because the equation is not a perfect square quadratic equation.
Answer:
-6
Step-by-step explanation:
Distribute -4(3-1) the answer for that is -12 + 4
-12+4+2 is -6 donald trump rules.
Answer:
39.25
Step-by-step explanation:
diameter. is 1 therefore radius is 1/2
formula is πr²h
where
h is height=5
=3.14x½²x5
=3.925 for one paint
therefore for 10 paints, we have
=3.925x10
=39.25
Answer: -16
Step-by-step explanation:
49 would be the result of -7 squared. Due to the fact it is negative, it would cancel out to be positive.
For the numerator, 49-1 is equivalent to 48.
48/x+4
-7+4 = -3
48/-3
= -16
They both have the same value.
Step-by-step explanation:
4 quarters= 1 dollar
So, 8 quarters would be 2 dollars.
