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Pearl and Jason are working on homework together when Pearl says, "got x = 6 and x=13 as the solutions, but it looks like you got something different. Which solutions are right?
"I found a mistake," says Jason. Where did Pearl make a mistake? Explain why it is incorrect. Pearl's work is shown below.

Pearl and Jason are working on homework together when Pearl says got x 6 and x13 as the solutions but it looks like you got something different Which solutions class=

Respuesta :

adioabiola

The mistake made by pearl from solving the quadratic equation is that he didn't equate the equation to zero(0) before solving

How to solve quadratic equation?

x² - 3x - 10 = 8

x² - 3x - 10 - 8 = 0

x² - 3x - 18 = 0

x² - 6x + 3x - 18 = 0

x (x - 6) + 3(x - 6) = 0

(x + 3) (x - 6) = 0

x + 3 = 0. x - 6 = 0

x = -3. x = 6

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