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Write 2x^2 + 16x + 26 in the form a(x + d)^2 + e where a, d, and e are integers.

This is an example of completing the square. Completing the square means taking a usual quadratic equation ax2+bx+c=0 and writing it as a(x+d)2+e=0, where we must find the numbers d ...

HB
Answered by Hannah B. Maths tutor
8149 Views

Solve the equation: 5p − 7 = 3p + 3 .

At first, it is important to identify that this is a linear equation, usually in the form of y = mx + b. These equations are used for straight line graphs. The most important rule to remember when solving...

MS
Answered by Mayurie S. Maths tutor
5404 Views

Find the area between the positive x axis and the line given by y=-(x^2)+2x

The first piece of understanding needed to answer this question is that integration can be used to find the area under a graph between two points. However, before we can integrate we must find the bounds ...

Answered by Maths tutor
3159 Views

The perimeter of a right-angled triangle is 72 cm. The lengths of its sides are in the ratio 3 : 4 : 5 Work out the area of the triangle.

Let x be a number so that the sides of the triangle are 3x, 4x and 5x, because the ratio is 3 : 4 : 5. The perimeter is 3x+4x+5x=12x=72, meaning that x = 72/12 = 6. The sides of the triangle are 36=18...

VP
Answered by Vlad P. Maths tutor
2920 Views

What is Bayes' rule and why is it useful?

Bayes' rule is a really neat equation that's used everywhere, including in Artificial Intelligence! Most things in the real world aren't certain: that's why we use probabilities. Also, we often can't dire...

AS
Answered by Andrew S. Maths tutor
3426 Views

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