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Esmail
21.01.2020 •
Mathematics
Percy solved the equation x2 + 7x + 12 = 12. his work is shown below. is percy correct? explain. 1. (x + 3)(x + 4) = 12 2. x + 3 = 12 or x + 4 = 12 3. x = 9 or x = 8
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Ответ:
Sample Response: Percy is not correct because he applied the zero product property to a factored expression that was not equal to 0. He should have subtracted 12 from both sides to get x2 + 7x = 0 before factoring. The correct solutions are 0 and -7.
Ответ:
Percy did the wrong factorization. The correct solution of the given quadratic equation is 0 and -7 and this can be determined by using the factorization method.
Given :
Quadratic Equation -![x^2+7x+12 = 12](/tpl/images/0464/4702/bdbfb.png)
The following steps can be used to evaluate the given quadratic equation
:
Step 1 - Write the equation.
Step 2 - Subtract 12 from both sides in the above equation.
Step 3 - Now, factorize the above equation.
Percy did the wrong factorization. The correct solution of the given quadratic equation is 0 and -7.
For more information, refer to the link given below:
link
Ответ:
p=number of seashells pierre collected
p+3p=52
4p=52
p=13
13 seashells