apari1
what is the x intercept of y= –16x^2 + 210x



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Hero
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Set y = 0 and solve for x

apari1
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i dont no how can you explain ?

Hero
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0 = 16x^2 + 210x
Solve that

tasreeb
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y=0,
16x^2+210x
x(16x+210)
x=210/16

apari1
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i got x=0, 105/8

apari1
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im assiming im wrong and @tasreeb is right

Hero
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0 = 16x^2 + 210x
0 = x(16x  210)
0 = x(16x  210)
x = 0
16x  210 = 0
16x = 210
x = 210/16
x = (0, 210/16)

apari1
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so he was wrong also because his answers are negative, ?

Hero
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210/16 = 210/16

Hero
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/ = +

apari1
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oh ya cause two negaties equal a positive lol sorry brain stub !

tasreeb
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x=0, x=210/16