is correct answer 5?
2007-03-10 14:14:56 · 5 answers · asked by noggle4 2 in Science & Mathematics ➔ Mathematics
no.
P(x)= -3x^2-5x+8,
P(-5)= -3(-5^2)-5(-5)+8
=-75+25+8 = -42
2007-03-10 14:20:22 · answer #1 · answered by jaybee 4 · 0⤊ 0⤋
P(-5) = -75 + 25 + 8 = -42
2007-03-10 14:19:02 · answer #2 · answered by gummstein 1 · 0⤊ 0⤋
Plug it in, plug it in
P(-5) = -3(-5)^2 - 5(-5) + 8 = -75 +25 + 8 = -42
Not 5.
2007-03-10 14:20:05 · answer #3 · answered by cattbarf 7 · 0⤊ 0⤋
-3(-5)^2-5(-5)+8=-42
2007-03-10 14:19:09 · answer #4 · answered by leo 6 · 0⤊ 0⤋
x^3 + 4x^2 - 5 = x^3 - x^2 + 5x^2 - 5x + 5x - 5 = x2(x-a million) + 5x(x-a million) +5 (x-a million) = (x2+5x+5)(x-a million) u ought to have the means to proceed from here. use the formula to locate the zeros for ax2 + bx + c.. cheers
2016-12-14 16:01:27 · answer #5 · answered by ricaurte 4 · 0⤊ 0⤋