For this case we have to factorize the following trinomials as the product of two binomials.
We have then:
a2 + a - 20
(a + 5) (a-4)
a2 - 9a + 20
(a-5) (a-4)
a2 - 8a - 20
(a-10) (a + 2)
a2 - 12a + 20
(a-10) (a-2)
a2 - 19a - 20
(a-20) (a + 1)
Answer: I think the answer is 88.5%
Step-by-step explanation:
Answer:
x = 9
Step-by-step explanation:
diagonals bisect each other so we can set up these equations:
x+8 = 2y+5
2x = 3y
in the top equation we can solve for 'x': x = 2y-3
in the second equation we can solve for 'x': x = 3y/2
2y-3 = 3y/2
multiply each side by 2 to eliminate fractions:
4y - 6 = 3y
4y = 3y + 6
y = 6
2x = 3(6)
2x = 18
x = 9
