(3p-9) (p+2)
3p (p+2) -9 (p+2)
3p^2+6p-9p-18
3p^2-3p-18
Dividing through out by 3,we get;
3p^2/3 - 3p/3 - 18/3
P^2 - p - 6
(P - 3) (p+2)
P - 3 =0 OR P+2=0
P - 3 +3=0+3 OR P+2 - 2=0 - 2
P=3 OR P= -2
5x + 3y -2z x=4 y=5 z=6
5(4) +3(5) -2(6)
20+15-12
23
2x*x= 2x^2
5x= -7
divide the left hand side and the right hand side by the ceofficient of x which is 5......
5x/5= -7/5
answer..... x=-7/5
2.5*10^12/5*10^6
2.5/5=0.5
from the exponents, 10^12/10^6, we subtract the exponents because the expression was dividing
12-6= 6.........10^6
answer = 0.5*10^6
Thanks @CPhill.....can you please solve it again using the method of completing the square?
