Friday
October 24, 2014

Homework Help: math, correction plz

Posted by jas20 on Saturday, March 24, 2007 at 8:15pm.

Can someone correct these for me.PLZ
Problem#1
Directions solve equation
x+4 = 3

My answer: x = 5

Probelm #2
Directions solve equation

(4x+1) + 3 = 0

My answer x = 2

Problem #3
Directions solve equation
(2y+7)+4=y
My answer y= 1 and y = 9

the symbol a is a radical it came out wrong.



the first one is correct
Use brackets to show which parts are below the square root sign

in the second:
√(4x+1)+3=0
√(4x+1)=-3
square both sides etc.

You should have been told that if you obtain algebraic answers after "squaring" , all solutions have to be verfied.
If you check your answer of x=2, it does not satisfy the original equation.
So the second equation has no real solution.

The same is true for your third equation.
Even though y=1 and y=9 are algebraic solutions, when you check the answers in the original equation, only y=9 works, the other answer is not valid.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

correction of math - can someone correct this for me please. Directions: Solve ...
math,correction - Is this correct or no. I need help in a couple of problems can...
math, beginning algebra - can someone correct this for me. Directions: Solve ...
math,correction,plz - can someone correct this forme solve 7/5 = 35/x My answer...
math,correction - Can someone correct these for me plz... Problem#6 Factor. x(x-...
Math Help plz!!! Really need help. - Use the Systematic Trial to solve this ...
math,correction - can someone correct this for me plz.... Write the equation of ...
math,correction - okay for the first one i/ve done it twice and both times i got...
MATH ,CORRECTION - DIRECTIONS ARE. WRITE THE EQUATION OF THE LINE L satisfying ...
math,correction - can someone correct these for me i'll appreciate it thank. ...

Search
Members