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Rearrange, 5(a + b)= 2ab , to make 'a' the subject

The question is asking for 'a' to be the subject and therefore our aim is to result in an answer with the form 'a='. The first step is to expand the brackets on the left hand side by multiplying 'a' by 5 and...
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Answered by Meera M. • Maths tutor
11423 Views

Solve the equation 3x^(2)-7x+3 giving your answer to three significant figures.

Since there is no further factorisation possible we use the quadratic formula x=[-b±√(b 2 -4ac)]/2a. From the equation in question we have a=3, b=-7, c=3. Substituting into the quadratic formula x=[7±√((-7) ...
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Answered by Benjamin H. • Maths tutor
5277 Views

Find the value of x when 2x^2 - x - 6 = 0

2x 2 - x - 6 = 0 This must first be factorised - I use the 'box method' when the reciprocal of x 2 is >1. This is difficult to explain via writing but it involves a little trial and error. 2x + 3 --> (...
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Answered by Gayathri S. • Maths tutor
9337 Views

solve the quadratic equation: x^2-4x+3=0

This equation is asking us to find the value(s) of x that when substituted in place of x in the equation x 2 -4x+3 the computed value should equal 0. There three potential methods of solving this equation, t...
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Answered by Taylor R. • Maths tutor
10265 Views

Solve the quadratic 3x^2+11x+6=0

In order to solve the quadratic, we need to factorise it. Consider the coefficient on the x^2, its only factors are 1 and 3 so this tells us that in our factorising we will have something that looks like (x....
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Answered by Natalie F. • Maths tutor
10324 Views