x + 5 - 2x = 9 -x = 4 x = -4
root(x+5)-root(x-5)=2 root(x+5)=2-root(x-5) x+5=4-4root(x-5)+x-5 4root(x-5)+6=0 root(x-5)=-3/2 x-5=9/4 x=9/4 +5 x=29/4
X2 - 4X - 5 = 0 easy factor, what two factors of - 5 add up to - 4 (X + 1)(X - 5) X = - 1 ------------- X = 5 --------------
2/x + 5
0.0000115 = 1.15 X 10 -5 ---------------------is this what you mean? Not - 4 but - 5 .
3/x-5 - 4/5-x 3(5-x) -4(x-5) 15-3x-4x+20 35-7x
(X-5)(X+4)=0 so X-5=0 -----X=5 and X=4=0 so X=-4 it factors to (X-5)(X+4) so X=5,-4
(x - 5)(x + 4)
5 x 10-4 = 0.0005
5 x 6 - 9 - 4 = 17
x + 5 - 2x = 9 -x = 4 x = -4
(x - 4)(x + 9)
x - 4 = 1 4 + 1 = x Therefore, x = 5
root(x+5)-root(x-5)=2 root(x+5)=2-root(x-5) x+5=4-4root(x-5)+x-5 4root(x-5)+6=0 root(x-5)=-3/2 x-5=9/4 x=9/4 +5 x=29/4
x/5 x 4/4 = 4x/20 3/4 x 5/5 = 15/20 (4x - 15)/20
Find factors of -5 that can be added to make -4, in this case -5 and 1, so: (x - 5)(x + 1) = x2 - 4x - 5
x= Negative 4