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3 years ago

Solve the following system of equations algebraically: Y = x^2 + 8x – 9 Y = 2x + 7

Mathematics

1 answer:

julia-pushkina [17]3 years ago

3 0

Use simultaneous equations:
2x + 7 = x^2 + 8x - 9
7 = x^2 + 6x - 9
16 = x^2 + 6x
+ or - 4 = 7x
answer is
-4/7 or 4/7

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So:

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