Question

Solve 20x2 + 70x + 20 = 0.

x equals the quantity of negative 7 plus or minus the square root of 33 all over 4

x equals the quantity of negative 70 plus or minus the square root of 33 all over 4

x equals the quantity of 7 plus or minus the square root of 6 all over 4

x equals the quantity of 70 plus or minus the square root of 33 all over 4

Answer 1

hmm seems like u have to use the quadratic formula, just plug in a=20, b=70 and c=20 and you should get the answers.

Answer 2

do u know how to do it?

Answer 3

nope

Answer 4

x = (-b±√(b^2-4ac))/2a

Answer 5

hmm I don't know how to enter the fraction in the equation box.

Answer 6

cause there doesn't seem to be one.

Answer 7

http://www.purplemath.com/modules/quadform.htm

Answer 8

click on the link and u can see the fraction part x = -b...... over the denominator 2a
that is the formula.

Answer 9

just use your calculator and plug that formula in replacing the a for 20, b for 70 and c for 20.