7x+3-2x if x =8 show me the work for this problem

Simplify 5 square root of 7 end root plus 12 square root of 6 end root minus 10 square root of 7 end root minus 5 square root of 6 . (1 point) 5 square root of 14 end root minus 7 square root of 12 5 square root of 7 end root minus 7 square root of 6 7 square root of 12 end root minus 5 square root of 14 7 square root of 6 end root minus 5 square root of 7

Which polynomial function has x intercepts -1, 0, and 2 and passes through the point (1, -6)

On a piece of paper graph f(x)=5•(0.4)^x