22chandlerlashley
13.07.2020 •
Mathematics
One of the solutions to x2 − 2x − 15 = 0 is x = −3. What is the other solution? 20 points if you can answer in under 30 minuets
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Ответ:
x=5 x=-3
Step-by-step explanation:
x^2 − 2x − 15 =0
Factor
What two numbers multiply to -15 and add to -2
-5*3 = -15
-5+3 =-2
(x-5) (x+3)=0
Using the zero product property
x-5 =0 x+3 =0
x=5 x=-3
Ответ:
5,120 * 1.2 = 6,144