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x^2 - 80x -81 = 0
Use the quadratic formula, also will work
Three ways to solve a quadratic equations:
2. Quadratic formula
3. Completing the square
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bnc262, two kinds of solution have been done, so i think it is fair for you to try the last method :)
when my teacher did these similar problems she got 2 answers is there a reason why
We also got two answers if you look above. When you solve a quadratic equation expression which is equal to zero, you're actually trying to find all values of x for which that expression is equal to zero. If you look at a graph plot for the equation you're solving, you'll find that, for quadratics, the curve will cut the x-axis anywhere from zero to two times. There are, then, either zero, one or two (real) solutions for x, depending on the nature of your quadratic.
yes every quadratic equation have 2 answers
Sorry wali, have to be careful. A quadratic equation also can have just one answer or no answer.
o yes it con have
when you say solve the equation, what do you want to solve for?