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ronniethefun
25.02.2021 •
Mathematics
What is the area of this figure
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Ответ:
( a- 7) ( a+6) =0
a=7 a = -6
Step-by-step explanation:
a^2 -a -42 =0
What 2 numbers multiply to -42 and add to -1
-7 * 6 = -42
-7+6 = -1
( a- 7) ( a+6) =0
You only ask use to factor but since it is equal to zero we can solve using the zero product property
a-7 =0 a+6 =0
a=7 a = -6