( 4x² - 5x + 1) + (-3x² + x +5)

With #! i’ve tried to figure it out but i can’t.

1. evaluate 8x(2)y9(-2) for x=-1 and y=2 2. simplify the equation. -() 3. simplify the expression. [tex]\frac{5}{x(-2) y9(5)}[/tex]

If p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if