Firejay5
Solve each equation by graphing. If exact roots can't be found, state the consecutive integers between which the roots are located.
22. x^2 + 4x - 4 = 0
I said the answer was -2 and 0 (-2, 0) <-- not coordinate point, I am not for sure if it's right or not
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experimentX
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do you know how to factorize?
Firejay5
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Do you have a graphing calculator?
experimentX
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i don't have graphing calculator ... do you know how to solve quadratic equation? or do you know how to factorize?
Firejay5
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I know how to solve a quadratic equation
Firejay5
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@zordoloom Do you want to help
experimentX
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well ... solve it, you should get it.
zordoloom
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Sure, btw, the answer that you mentioned is not correct. As experimentX mentioned, solve it using the quadratic formula, and you should have the correct answer.
Firejay5
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How we don't solve it if it equals 0
zordoloom
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Try using the quadratic formula.
zordoloom
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a=1, b=4, and c=-4
zordoloom
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|dw:1358103518137:dw|
zordoloom
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Do you need exact answers, or would approximations suffice?
Firejay5
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I need help or at least a lead towards the answer
Firejay5
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matter of fact exact answers
zordoloom
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|dw:1358103629425:dw|
zordoloom
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I really don't know how you got -2 and 0.
Firejay5
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I think #32 is a no solution
zordoloom
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The solution is above
zordoloom
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|dw:1358103764172:dw|
Firejay5
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nevermind
zordoloom
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for #22, since it mentions to solve by graphing, it is a lot easier. just look at the graph and state between integer the graph intersects.
zordoloom
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"state the consecutive integers between which the roots are located."
Firejay5
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can you wait a second?
zordoloom
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sure
Firejay5
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thanks @zordoloom