Answer:
x₁ = -4
x₂ = 3
Step-by-step explanation:
x²+ x + 12 = 0
x = {-1±√((1²)-(4*1*-12))} / (2*1)
x = {-1±√(1+48)} / 2
x = {-1±√49} / 2
x = {-1±7} / 2
x₁ = {-1-7} / 2 = -8/2 = -4
x₂ = {-1+7} / 2 = 6/2 = 3
Check:
x₁
-4² + (-4) - 12 = 0
16 - 4 - 12 = 0
x₂
3² + 3 - 12 = 0
9 + 3 - 12 = 0
5/3 is the simplified slope.
(15x3) feet ÷ 3 = (5x1) feet = 5 feet
33 feet x 5 feet=165 feet
165 feet ÷ 3 = 55 feet
55 feet÷(33 feet÷3)=55 feet ÷ 11 feet = 5 feet
Ans:
5 + 11 x 5 feet
