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2 years ago

F(x, y) = 4x + 7y - 6, please find the value of f(5,-5).

Mathematics

1 answer:

ohaa [14]2 years ago

4 0

f(x, y) = 4x + 7y - 6

substitute x=5 and y=-5

f(5,-5) = 4(5) + 7(-5) - 6

f(5,-5) =20-35-6

= -15-6

=-21

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$(x-3)(x+3)\\x^{2}+3x-3x-9\\x^{2}-9$

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