
First we put parentheses and in each bracket we put (X) and then we put the signs x² is positive and the 17X before it is a negative q is positive with negative —> negative, and negative before 17X and negative before the 60 —> positive. And then the number that does not have (x) where did it come from, for example 60 came from 20 x 3 or 30 x 2...etc. We can verify this by multiplying the parentheses together and the same number comes out .
Or it can be checked by multiplying the first bracket 3 with x from the second parenthesis comes out 3X and negative 20 from the second parenthesis with X from the first parenthesis and subtract 3X from –20xcomes out –17X .
I hope I helped you^_^
1. (-4 , 3) : substitute way .
2. (10 , -1) : elimination way.
3. (26/7 , -26/7 ) : elimination way.
4. ( 1 , 1) : elimination way.
Answer:
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Step-by-step explanation:
You multiply x times x
=x
1 x 3
=3
It is x+3
f(x)=-3x^2-1
f(-2)= -3(-2)²-1=-3·4-1= - 13