Mathematics
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OpenStudy (anonymous):
[\sqrt{d ^{2}-19} -2d + 11=0
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OpenStudy (bahrom7893):
wait can u repost the question?
OpenStudy (bahrom7893):
is it the same that i answered?
OpenStudy (anonymous):
no i typed it wrong the first time
OpenStudy (bahrom7893):
So can u repost it, i still dont see the right question
OpenStudy (anonymous):
\[\sqrt{d ^{2}-19}-2d+11=0\]
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OpenStudy (bahrom7893):
okay
OpenStudy (bahrom7893):
\[\sqrt{d^2 - 19} = 2d - 11\]
Move -2d and 11 to the other side
OpenStudy (bahrom7893):
Square both sides:
\[d^2 - 19 = (2d - 11)^2\]
OpenStudy (bahrom7893):
Rewrite the right side as:
\[d^2 - 19 = 4d^2 - 44d + 121\]
OpenStudy (bahrom7893):
Rewrite in form of a regular quadratic equation and simplify:
\[3d^2 - 44d +130 = 0\]
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OpenStudy (bahrom7893):
Can u finish solving for d?
OpenStudy (anonymous):
yes, Do you have time for one more. It is similar with a cube root?
OpenStudy (bahrom7893):
yeah
OpenStudy (bahrom7893):
in that case u cube both sides, same method
OpenStudy (anonymous):
\[\sqrt[3]{8v ^{2}-6v}+1=0\]
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OpenStudy (bahrom7893):
so move one over to the right and cube both sides to get:
8v^2 - 6v = (-1)^3
8v^2 - 6v = -1. Solve for V
OpenStudy (anonymous):
I get \[8v^{2}-6v+1\]
OpenStudy (bahrom7893):
yeah 8v^2 - 5v + 1 = 0
OpenStudy (bahrom7893):
solve for v
OpenStudy (anonymous):
thanks