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Baharak Z. for tutoring lessons in Sherman Oaks CA WyzAnt Tutoring Tutor Tutor United States

Baharak Z.

Do you want to learn math?

Sherman Oaks, CA (91423)

Travel Radius 5 miles
Hourly Fee $60.00
Discount $51.00 - $57.00 Save up to 15% (i)
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Baharak's Responses in WyzAnt Answers

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MathAlgebra

x^2-x+2x-2

x^2-x+2x-2 hellllllllllllllllllllllllllllllllllllllllllllllppppppppppp

+ more- less
Asked by Ashley from Stuart, FL
00

Baharak's Answer:

If you want to solve the equation x^2-x+2x-2=0 then first simplify it to x^2-x-2 = 0.

If we have ax^2+ 2bx + c =0 we can solve the equation as follow in two steps:

step one ) calculate Δ = sqrt(b^2 - 4 ac) if Δ≥0 then the equation can be solved. go to step two.

note1: In our case  Δ = sqrt(1+8) = 3 ≥0 then go to note2.

step two) calculate the roots as x1 = (-b + Δ)/2 and x2 = (-b - Δ)/2

note2: x1 = (-(-1) +3)/2 = 1 and x2 = (-(-1) - 3)/2 = -2

Now you not only have the roots of the equation but also can rewrite your equation as

x^2-x+2x-2 = (x-x1) (x-x2) = (x-1)(x+2)

Baharak's Hourly Rate

Hourly Fee: $60.00

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