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Work out the solutions to the following quadratic equation: x² + 7x + 10 = 0 by factorising.

Firstly, we have to factorise the quadratic equation. So what this involves is finding two numbers which add up to 7 but also multiply to give 10 at the same time. To help you with this we can find common mu...
TN
Answered by Tin N. • Maths tutor
5165 Views

A small ball of mass 150 g is placed at a height of 20cm above the ground on an incline of 35°. It is released and allowed to roll down the slope; what will be the ball's speed when it reaches the ground? Assume friction and air resistance can be ignored.

This question is best solved using conservation of energy, since it is stated that friction and drag (non-conservative forces) can be ignored.When the ball is released at the top of the slope, its initial sp...
RS
Answered by Rhys S. • Physics tutor
2220 Views

Solve the equation x2-7x=-10

Step 1: Rearrange equation to form x 2 + bx + c= 0 -Add 10 to both sides of equation: x 2 -7x +10=0 Step 2: Factorise the quadratic equation -Find two numbers which add to make -7 and multiply to make 10: -5...
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Answered by Edward W. • Maths tutor
5260 Views

Write 2x2+ 12x + 3 in the form p(x + q)2+ r

Write 2x 2 + 12x + 3 in the form p(x + q) 2 + r Step 1: Factorise all the x terms using a common factor with brackets. In this case 2 is a common factor to both 2x 2 and 12x ==== Step 1 Answer: 2(x 2 +6x)+3 ...
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Answered by Juhi S. • Maths tutor
22258 Views

how is an ation potential generated?

An action potential is generated within the axon of a neuron via a series of steps:1) the inside of the neuron at rest is negative (-70mV), called the resting potential2) Na ion channels open and inside of t...
AL
Answered by Alexander L. • Biology tutor
2729 Views