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solve this equation x^2 -2x=-1

to first think about solving this equation you need to add 1 to both sides producing the equation x^2-2x+1=0 you then need to factorise this equation as it is a quadratic equation (x-1)(x-1) =0 for this to e...
GB
Answered by George B. • Maths tutor
5437 Views

Integrate y=2x^2 +4x-1

To integrate this simple equation add one to the power then divide by the new power for example. 2x^2 becomes 2/3x^3 4x becomes 2x^2 and 1 becomes x plus constant c so the overall integrated equation is 2/3x...
GB
Answered by George B. • Maths tutor
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Solve t^2-t=3(7+t)

Expand RHS: t 2 - t = 21+ 3tCollect all terms on one side: t 2 - 4t - 21 = 0Factorise and solve by inspection / use the quadratic formula to solve for t: (t + 3)(t - 7) = 0 / t = [ -(-4) ± ( (-4) 2 - 4x(1)x(...
CW
Answered by Charlie W. • Maths tutor
3673 Views

Find the exact value of dy/dx at (-2,4) of the curve C: 4x^2 -y^2 + 6xy + 2^y = 0

First notice that this is an equation that will require implicit differentiation since C cannot be explicitly written in terms of either x or y. Thus we must differentiate each term with respect to x:-the fi...
SD
Answered by Saskia D. • Maths tutor
4953 Views

Solve 5x-9=26.

When a question asks us to solve an equation, it is asking us to find the value of x. We need to rearrange so that x is on one side of the equals sign, and everything else is on the other. First, we need to ...
BA
Answered by Bethany A. • Maths tutor
7603 Views