A.) j(a) = a^2 - 2a + 4
B.) j(3) = (3)^2 - 2(3) + 4 = 9 - 6 + 4 = 7
C.) j(x^2) = (x^2)^2 - 2(x^2) + 4 = x^4 - 2x^3 + 4
D.) j(x+3) = (x + 3)^2 - 2(x + 3) + 4 = x^2 +6x + 9 - 2x - 6 + 4 = x^2 + 4x + 7
E.) j(x+h) = (x + h)^2 - 2(x + h) + 4 = x^2 + 2hx + h^2 - 2x - 2h + 4
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5
X = 7 9x - 2x = 49
to divide
X = 6 5x + 2x = 42
It depends on the value of x. The x is a variable. To evaluate an expression, you need to have a value (number) to replace the x.