There is the graphing method, completing the square, factoring, and my favorite, the quadratic formula
Answer:
6(x-3)(X^2+4)(x+1)=0
real answers:
(x-3)=0
x=3
x+1=0
x=-1
This numbers are not real:
x^2+4=0
x^2=-4
= ±
Answer:
25%
Step-by-step explanation:
Answer:
y = 4x-4
Step-by-step explanation:
Area of parallelogram = base * height
base 1 = 4.2 cm
height 1 = 3.6 cm
∴ Area = 4.2 * 3.6 = 15.12
let the other base 2 = x
∴ the altitude of this base = height 2 = 2.4
∴Area = 2.4 x = 15.12
Solve for x
∴ x = 6.3 cm
∴ The perimeter of parallelogram = 2( base 1 + base 2)
= 2 ( 4.2 + 6.3 ) = 21 cm