Hi, im having problems with a simple equation that looks like this: After squaring both sides i have: Wich gives: However, the anser should be 6 and i get 4. Im not sure about what i am doing wrong =/
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When you multiplied sqrt(x - 2) and sqrt(x - 5) to each other, you forgot to include the square root sign in the product. You ended up with a final expression that doesn't include any square root signs so it became inaccurate.
Originally Posted by Jones Hi, im having problems with a simple equation that looks like this: After squaring both sides i have: Wich gives: However, the anser should be 6 and i get 4. Im not sure about what i am doing wrong =/ Starting from this step: This becomes: Now square both sides: Test values: This doesn't work... is the only solution.
Originally Posted by Serena's Girl When you multiplied sqrt(x - 2) and sqrt(x - 5) to each other, you forgot to include the square root sign in the product. You ended up with a final expression that doesn't include any square root signs so it became inaccurate. Since we have Its the same thing as Accordign to the exponetial rules and Therefore
Originally Posted by Jones Since we have Its the same thing as Accordign to the exponetial rules and Therefore But you can only do that if the exponential functions have the same base. In the case of square roots, --Chris
Oh, right. Thank you
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