Asked by Jodie
solve the following quadratic
100x^4=400x^3+2100x^2
100x^4=400x^3+2100x^2
Answers
Answered by
Steve
It's not a quadratic as it stands. However, you can factor it to be
100x^4=400x^3+2100x^2
100x^2 (x^2 - 4x + 21) = 0
100x^2 (x-7)(x+3) = 0
Now just read off the roots
100x^4=400x^3+2100x^2
100x^2 (x^2 - 4x + 21) = 0
100x^2 (x-7)(x+3) = 0
Now just read off the roots
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