Thursday
November 27, 2014

Homework Help: maths

Posted by minerva on Friday, January 12, 2007 at 5:00am.

how do i solve this equation? there is another answer other than 0, but i am not sure how to get it.
5x^2 + 7x =0

factor the term:

x(5x+7)=0 Either term can be zero. You found the x=0, what value of x makes 5x+7 zero?

Factor it to this form:
x (5x + 7) = 0
There will be a solution when either factor is zero. Once solutuion is x = 0, and the other occurs when 5x +7 = 0. That solution is x = -7/5

i just don't get it. how did you get -7/5? zero times anything is zero, so x can be zero. so, what it that thing about what value of x makes 5x+7 zero? what do i do after i factor it to x(5x+7)=0?

oooohh... i get it. x(5x+7)=0. so either x is 0, or (5x+7) is 0, so x is -7/5 right? thanks!

correct.

If abc = 0, then a, b, or c can be zero to make a solution.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

maths - for this equation x^2 - x = 0 would x = 1 i think this is the answer but...
Math - -x^3 + 1.85x^2 - x +0.15 = 0 how can you solve for x? An exact solution ...
ks maths - 2x - 4y = 12 3x + 2y = 10 whats the answer Do you know how to solve ...
Factor completely - I am to factor this completely and I am stuck. 2r^3 + 8r^2 +...
math - solve the equation x^3-5x^2-4x+20=0 I need a hint on how to solve this ...
MATH - I NEED TO SOLVE FOR Y AND X im getting rele confused on this. ok here is ...
MATH - solve 1-(2/x)=2/(x+2) Express your answer in simplest radical form. What ...
Algebra2 - Find the polynomials roots to each of the following problems: #1) x^2...
maths - how do i solve this equation? 2/(x+1)=1/(x-1) - (1/(2x-1)) thx Get a ...
Math 3 - Solve by factoring: One of the solutions to the quadratic equation x^2...

Search
Members