Let f(x) = 7x2 - 5x + 3 and g(x) = 2x2 + 4x - 6.
part a: find f(x) + g(x)
part b: find f(x) - g(x)
part c: find g(x) - f(x)

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,

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