Pergunta
Evaluate when f(x)=-x^2+3x-2 and g(x)=4x+2 a) g(-1) b) Find x when g(x)=-10 C) f(-5)
Solução
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ViniciusElite · Tutor por 8 anos
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a) To find $g(-1)$, we substitute $x=-1$ into the function $g(x)$:<br />$g(-1) = 4(-1) + 2 = -4 + 2 = -2$<br /><br />b) To find the value of $x$ when $g(x)=-10$, we set $g(x)$ equal to $-10$ and solve for $x$:<br />$4x + 2 = -10$<br />$4x = -12$<br />$x = -3$<br /><br />c) To find $f(-5)$, we substitute $x=-5$ into the function $f(x)$:<br />$f(-5) = -(-5)^2 + 3(-5) - 2 = -25 - 15 - 2 = -42$
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