Multiply the following polynomials x, (x+3) and (2x-8)

Mathematics

1 answer:

otez555 [7]3 years ago

7 0

Answer:

2x^2-2x-24

Step-by-step explanation:

(x+3)*(2x-8)=2x^2-8x+6x-24

=2x^2-2x-24 (divide by 2)

=x^2-x-12

hope my answer is right and helpful to u

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N is a positive intiger. Explain why 2n+1 must be an odd number.

pogonyaev

Answer:

Because the number would be multiplied by an even number, which is 2. If the number (odd or even) is multiplied by two, then the result would be an <em>even number</em>.

Proof:

2(1) = 2

2(6) = 12

2(7) = 14

2(3) = 6

The number would then be added by an odd number, which is 1. If an even number is added with an odd number, then the result would be an odd number.

Proof:

2 + 1 = 3

12 + 1 = 13

14 + 1 = 15

6 + 1 = 7

6 0

4 years ago

A ball is thrown vertically upward with an initial velocity of 48 feet per second. The distance s (in feet) of the ball from th

ra1l [238]

Hello,

s=48t-16t²

a)
s=0==>16t(3-t)=0==>t=0 or t=3

b)
s>32==>48t-16t²>32===>16(t²-3t+2)<0
Δ=9-8=1
==>16(t-1)(t-2)<0

==>1<t<2 (negative between the roots)