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Destine1965
25.06.2019 •
Mathematics
Is (3,-2) the solution to this system of equations? yes or no (circle one) -2x-4y=2 3x+4y=8
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Ответ:
(2,−1)
Explanation:
The quickest way is to use elimination
3x+4y=2
+
2x−4y=8
−−−−−
5x =10
⇒ x=2
Now substitute into one of the original eqns.
3×2+4y=2
6+4y=2
4y=−4⇒y=−1
check in other eqn.
2x−4y=8
2×2−(4×−1)=4−−4=4+4=8√
solns (2,−1)
Ответ:
i forgot ill keep looking tho
Step-by-step explanation: