Question
Please check and see if my answer are correct
1). 24v^2w^5x^8-20v^7w^9= -4v^2w^5(5v^5w^4-6x^8)
2). 81-25z^2= (5z+9)(9-5z)
3). 5y^3-7y^2-15y+21=(y^2-3)(5y-7)
4). x^2+4x-12= (x+6)(x-2)
5). 3x^2-26x+16= (x-8)(3x-2)
6).4v^6+6v^5-18v^4= 2v^4(2v-3)(v+3)
7). solve for y
y^2+6y+8=0 y= -2,-4
8).2v^2+4v-14=(v+1)^2= v=3,-5
Please check these for me
1). 24v^2w^5x^8-20v^7w^9= -4v^2w^5(5v^5w^4-6x^8)
2). 81-25z^2= (5z+9)(9-5z)
3). 5y^3-7y^2-15y+21=(y^2-3)(5y-7)
4). x^2+4x-12= (x+6)(x-2)
5). 3x^2-26x+16= (x-8)(3x-2)
6).4v^6+6v^5-18v^4= 2v^4(2v-3)(v+3)
7). solve for y
y^2+6y+8=0 y= -2,-4
8).2v^2+4v-14=(v+1)^2= v=3,-5
Please check these for me
Answers
Steve
all correct.
Though I'd have written #2 as (9+5z)(9-5z) to associate it more readily with the difference of two squares.
Though I'd have written #2 as (9+5z)(9-5z) to associate it more readily with the difference of two squares.