Top answers

4x^2+5x+2=10

x=0.921 x=-2.17
CK
Answered by Charles K. • Maths tutor
3321 Views

How do you solve a set of three similatenous equations with three unknown variables?

You should manipulate the equations into a form where you can eliminate a variable, using two of the equations. From here, you should be left with two new equations and two unknown variables. Repeat the same...
MG
Answered by Matthew G. • Maths tutor
3580 Views

Find x in the following linear equation (5x-3)/4=2

x=11/5
WP
Answered by Will P. • Maths tutor
3634 Views

2x^2-6x+5 can be written in the form a(x -b)^ 2 + c where a, b and c are positive numbers. Find a,b and c.

In order to solve this problem we must first complete the square. To complete the square we need to factorise the equation to get the coefficient of x to be 1. This gives: 2(x^2-3x)+5. We then need to comple...
CH
Answered by Chloe H. • Maths tutor
24097 Views

Solve the following simultaneous equations for x and y. 2x+5y=9 and 4x-3y=7

Here the best method to use will be elimination since using a substitution for x or y may produce some nasty fractions. The first thing to look for is that the 2x and 4x are nice multiples of each other. As ...
JG
Answered by Jamie G. • Maths tutor
8613 Views