(8+9) - (8+7) x (7 x 87)

-1,918

Step-by-step explanation:

PEMDAS says to do the parenthesis first. So,

8+9=17

8+7=15

7x87=609

which gives us,

17-15 x 609

Next is multiplication

15 x 609= 9,135

which gives us,

17-1,935= -1918

a) 0

step-by-step explanation:

i^413 x i^0 = 0 as any number multiplied by a zero is

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asnwer is (g o h o f)(x) = 2x - 6/x + 7

step-by-step explanation:

given,

f(x) = x - 3/x

g(x) = x + 3

h(x) = 2x + 1

we need to find : (g o h o f)(x)

we can write (g o h o f)(x) = g[ h{ f(x) } ]

so first we find h{f(x)}

h{f(x)} = f(x) + 3 = (x - 3/x) + 3

h{f(x)} = x - 3/x + 3

now we find g[ h{ f(x) } ].

g[ h{ f(x) } ] = g(x - 3/x + 3)       {plug h{f(x)} = x - 3/x + 3 in g[h{f(x)}] }

g(x - 3/x + 3) = 2 (x - 3/x + 3) + 1

                    = 2x - 6/x + 6 + 1

                    = 2x - 6/x + 7

hence we get (g o h o f)(x) = 2x - 6/x + 7