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How would you factorise x^2 + 4x + 4

This is in the form ax2 + bx + cWhere, a= 1b=4c=4To factor we have to find two numbers that:Add up to b, in this case 4Multiply together to give c

Answered by Toby B. Maths tutor
2617 Views

Points P and Q are situated at coordinates (5,2) and (-7,8) respectively. Find a) The coordinates of the midpoint M of the line PQ [2 marks] b) The equation of the normal of the line PQ passing through the midpoint M [3 marks]

a) For finding the midpoint M, the point M must be equidistant from P and Q in both the x and y axes. Hence, we consider the x and y axis separately. The midpoint of the x coordinates is essentially a mea...

Answered by Justin U. Maths tutor
3612 Views

The gradient of the curve at A is equal to the gradient of the curve at B. Given that point A has x coordinate 3, find the x coordinate of point B.

We are told f(x) = (2x-5)^2 (x+3).In part b) we are asked to show that f'(x) = 12x^2 -16x -35, so for part (c) we shall assume this definition for f'(x). We are told that the x coordinate for A is 3. Call...

Answered by Thomas F. Maths tutor
5448 Views

Solve x(5(3^0.5)+4(12^0.5))=(48^0.5) to the simplest form. (4 Marks)

The aim of the question is to equate x= into an expression.Step 1. Look to see if you can simplify the equation. On the left hand side of the equation you can see that 3 is a factor of 12. And also a fact...

Answered by Richard C. Maths tutor
3003 Views

What is the volume of a 3m long cone with radius 2m?

Formula for the volume of a cone = 1/3 * 3.14 * r^2 * h Therefore, volume = 1/3 * 3.14 * (2)^2 * 3 = 12.57m^3 .

Answered by Biplav P. Maths tutor
2984 Views

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