zavalaadrian846
18.12.2019 •
Mathematics
Solve the simultaneous equations.
y=5x^2 + 4x-19
y=4x+1
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Ответ:
x1=-2
x2=2
Step-by-step explanation:
5x²+4x-19=4x+1
5x²+4x-19-4x-1=0
5x²-20=0
5x²=20
x²=20/5
x²=4
x1=-√4=-2
x2=+√4=2
Ответ: