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Solve 5x^2 + 6x + 1 = 0

5x 2 + 2x + 1 = 0, x = -0.2 or -1
MB
Answered by Miles B. • Maths tutor
3878 Views

Express the fraction (p+q)/(p-q) in the form m+n√2, where p=3-2√2 and q=2-√2.

To answer this question, m and n should be whole numbers instead of fractions, without any square root terms in them. To do this, we first find the numerator, p+q, and the denominator, p-q, individually.Nume...
EF
Answered by Elizabeth F. • Maths tutor
8638 Views

Is the trapezium rule an exact method of integration?

The trapezium rule is not an exact method of integration, as it approximates the gradient between 2 ordinates to be constant. This method produces an overestimation for convex functions and underestimate for...
Answered by • Maths tutor
3923 Views

Find all of the roots of the equation y = 3x^3 - 12x

Step 1: Remove the most obvious factor, in this case 3x. y = 3x (x 2 - 4) Step 2: Realize (x 2 - 4) is the product of two squares and can undergo completing the square to produce two factors. y = 3x (x-2) (x...
VD
Answered by Victoria D. • Maths tutor
4098 Views

Josie is paid £1200 per month. She is going to receive an increase of 4% in the amount she is paid. Work out how much money Josie we be paid each month after the increase.

We need to first work out what 4% of £1200 is. 1% of £1200 = £(1200/100) = £12. 1% is £12, so 4%= 4*£12 = £48. She will receive a £48 increase.Adding that on to her original amount, £1200 + £48 = £1248.Final...
JB
Answered by Jack B. • Maths tutor
3604 Views