2006-10-05 01:28:31 · 4 answers · asked by MoaTenea S 1 in Education & Reference ➔ Homework Help
bob t below did a pretty good job explaining. When you see a letter be it p or f with another letter in parenthesis you are saying that the first letter is a function of the second letter.
In this case p(x) means p is a function of x and therefore the equation that follows tells you how it is a function of x, i.e. x^2+4x+5x.
To solve just follow bob t's solution below :
(-2)^2 + 4*(-2) + 5*(-2) = 4-8-10 = -14
2006-10-05 02:48:33 · answer #1 · answered by straighttalk 2 · 1⤊ 0⤋
First: Did you mean P(x) = x^2 + 4x +5 or x^2 + 4x +5x? Because that makes a difference. I'm assuming the first.
See the similarities: P(X) and P(-2). What they did in both is replace X by -2. X is your variable and the only one that can change. So like they did, you need to substitute -2 everywhere there's an X. Your answer should be 1.
2006-10-05 09:50:47 · answer #2 · answered by gabyrig 3 · 0⤊ 0⤋
ok p(x) = x squared + 4x + 5x. all you have to do is put a negative 2 wherever you see an x. so it becomes (-2) squared by 4(-2) + 5(-2). the answer is -14
2006-10-05 09:38:10 · answer #3 · answered by bob t 1 · 0⤊ 0⤋
Just plug -2 in for x. So you get 4 -8 -10 = -14.
2006-10-05 11:26:24 · answer #4 · answered by steiner1745 7 · 0⤊ 0⤋