2) 3) 4) 5) 6) Factor the polynomial campletely. If the polynoetial cannot be fa

Question

2)
3)
4)
5)
6)

Factor the polynomial campletely. If the polynoetial cannot be factored, write prime 2) 3a2 3ab-7a -7b 3) 625x -x5 A)prime Cx(2 25)2 252 4) x2.14x+4 Solve. 5) A boat moves 9 kilometers upstream in the same amount ot time it moves 16 kilorieters am. If the rate od the urzent is 9 kilameters per hour, find thwe rabe of the bost in stll A)2kmu hr B)1knihr .C. 32kmht A) 20 km/hr B)11 kiehr C) 32 krn/hr D)9lanihe 6) x2.15.7-o A) 8 B)9, -9 with an initial velocity of 21 meters per second from a caif that is 912+211+60 wh

Explanation / Answer

2.3a^2+3ab-7a-7b

=3a(a+b)-7a(a+b)

=(3a-7)(a+b)

3. 625-x^5

=x(625-x^4)

=x(5^4 -x^4)

=x((5^2)^2 -(x^2)^2)

=x(25+x^2)(25-x^2)

=x(25+x^2)(5-x)(5+x)

4.x^2 -14x +48

=x^2 -8x -6x +48

=x(x-8)-6(x-8)

=(x-8)(x-6)

6.sqrt(x^2 -15) +7=0

=sqrt(x^2 -15)=-7

squaring both sides

=x^2 -15=49

=x^2=64

square rooting both sides

x=+8,-8

5.if t s time taken let x be boat speed in still water y be the current speed

(x+9)t=16 for downstream

(x-9)t=9 for upstream

16/(x+9)=9/(x-9)

9x+81=16x -144

225/7=x

x=32 1/7 km /hr option c

Thnak you

Related Questions

Navigate

• Browse (All)
• Browse 2
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.