79% = 0.79= 79/100
(not sure if this is what you meant?)
(-x²-2x+6)+(-9x²-7x+6) = -x²-2x+6-9x²-7x+6 = -10x² - 9x + 12
Answer:
x=-3
y=3
(-3-3i)(3+5i)
Step-by-step explanation:

and we have that must equal
6-24i
3x+5y=6
5x-3y=-24 and if we work it we found out that the solutions are
x=-3 and
y=3
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