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Let j(x) = x^2 − 2x + 4. Evaluate the following. (A) j(a). (B) j(3). (C) j(x^2). (D) j(x + 3). (E) j(x + h)?
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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Let j(x) = x^2 − 2x + 4. Evaluate the following.(a) j(a)(b) j(3)(c) j(x^2)(d) j(x + 3)(e) j(x + h)?
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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