the second slide is A. 22
and the last one is x=81 z=99 and y=68
hope this helps
x⁴ - 8x² = 0
x⁴ - 8x² + 16 = 0 + 16
x⁴ - 4x² - 4x² + 16 = 16
x²(x²) - x²(4) - 4(x²) + 4(4) = 16
x²(x² - 4) - 4(x² - 4) = 16
(x² - 4)(x² - 4) = 16
(x² - 4)² = 16
The answer is B.
If you simplify 2/10 to get 1/5 then you can add the two together to get 4/5, so that would leave 1/5 for richard
