
Marsela F. answered 08/26/14
Tutor
4.3
(16)
Patient and Knowledgeable Ivy League Math Tutor
1) X2 -7x=0
Step 1: Factor x
x(x-7)=0
Step 2: Solve for roots
x=0; x=7
2. 3x-5+2x+1=3x+11
Step 1: Put all x in one side and numbers on the other side; Note when changing the side, the sign changes
3x+2x-3x=11+5-1
Step 2: Simplify
2x=15
x=15/2=7.5
3. I think you are missing a sigh in problem: 5-10 Missing sign 4x-5=7
Simplify:
4x4Y6/12x5y
Step 1: Divide both sides by 4 to get:
x4Y6/3x5y
Step 2: Divide both sides by x4 to get:
y6/3xy * Note x5/x4=x5-4=x1=x
Step 3: Divide both sides by y to get:
y5/3x * Note y6/y=y6-1=y5
The simplified form is y5/3x
2. w2w5w=w2+5+1=w8 * Note w=w1
3. m3(m2n-4)/n3
Step 1: simply m
m5n-4/n * Note m3*m2=m3+2=m5
Step 2: simplify n
m5n-5 * Note n-4/n1=n-4-1=n-5
Step 3: Further simplify in a nice neat expression
m5/n5 * Note n-5=1/n5
Simplified form: m5/n5
Hope this helps!