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How do you factorise a quadratic equation where the coefficient of x^2 isn't 1?

For this, we need to use the formula ax²+bx+c. Multiply the coefficient of a from your equation with the value of c. This gives you a value from which you need to find 2 factors of this value w...

Answered by Rosie G. • Maths tutor

5239 Views

How do you factorise a quadratic equation where the coefficient of x² isn't 1?

Using the formula ax²+bx+c, multiply the value of coefficient a, from your equation, with the value of c. Next, try to think of two factors of the number you just calculated, which also add tog...

Answered by Grace R. • Maths tutor

2892 Views

One important question type to be able to answer is integrating squared trig functions. like cos^2(x)

This question requires selecting the correct double angle formulae.
cos(2x)=2cos^2(x)-1 is rearranged to 1/2(cos(2x)+1)
this can now be integrated with the students knowledge of standard integra...

Answered by Andrew R. • Maths tutor

2782 Views

Solve the simultaneous equations. 2x + y = 18 x - y = 6

2x + y = 18x - y = 6. There are a few methods you can use to tackle simultaneous equations. The one I find the easiest is making one of the unknowns a subject and plugging it back into the other equ...

Answered by Sofia U. • Maths tutor

3248 Views

What is completing the square and how do I do it?

Completing the square is a method of solving quadratic equations that can't be factorised. The end goal is to express the quadratic in the form:(x + a)² = -bWhich allows us to root both sides a...

Answered by Henry J. • Maths tutor

3351 Views