Question

If x= 3a square 5a + 3
y=-3a square + a + 8
z=4a² - 6a - 5
find x - (y + z).
Answer= 2a
how?
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Answer 1

Answer:

3a^2+5a+3-(-3a^2+a+8-4a^2+6a+5)

3a^2+5a+3-(-7a^2+7a+13)

10a^2-2a-10=0