Plss need help as soon as posible

Brainliest to first ansswer

An assembly consists of two mechanical components. suppose that the probabilities that the first and second components meet specifications are 0.87 and 0.84. assume that the components are independent. determine the probability mass function of the number of components in the assembly that meet specifications. x

What is the value of the expression below? (81^2)^1/8

X+y=-4 x-y=2 use elimination with adding and subtraction