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Mathematics 8 Online
OpenStudy (anonymous):

Solve x^2+7x-10=0 Then find the x-intercepts of f(x)=x^2+7x-10

OpenStudy (anonymous):

well, you have to factor this inorder to find the zeros. Although if you have a graphing calculator you can just graph it and use the calc to find the zeros.

OpenStudy (anonymous):

Now, can you think of two numbers that multiply to be -10 and add to be 7?

OpenStudy (anonymous):

yeah i wish i had a cal. my battery died

OpenStudy (anonymous):

?

OpenStudy (anonymous):

can not think of one.

OpenStudy (anonymous):

are u sure its not +10 at the end , becuase if it is then it factors easily. If not then you have to use the quadratic fromula

OpenStudy (anonymous):

no it is - 10

OpenStudy (anonymous):

the use the quadratic formula

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