Top answers

Solve x^2 - 5x -14 = 0

x^2 - 5x -14 = 0Factorise to give (x-7)(x+2)=0therefore x-7 = 0 OR x+2 = 0 so x = 7 or x = -2
HB
Answered by Helen B. • Maths tutor
4674 Views

Write 4x^2+18x+2 in form a(x+m)+n.

First thing I like to do with questions like these is to check if I can simplify the expression given, and we can simplify this expression. So 4x^2+18x+2 can be simplified to 2x^2+9+1. The next step for me i...
BA
Answered by bisola a. • Maths tutor
3720 Views

What the structure of an atom, and how is the charge and mass calculated?

Structure - central nucleus of protons and neutrons orbited by electrons Charge - proton = +1, neutron = 0 and electron = -1 Mass - number of protons + number of neutrons
BS
Answered by Ben S. • Chemistry tutor
3659 Views

Solve 2x^2 + 7x + 6 = 0

2x^2 + 7x + 6 = 0 (2x + 3)(x + 2) = 0 2x +3 = 0 -> 2x = -3 -> x = -3/2 x + 2 = 0 -> x = -2 x = -3/2x = -2
BS
Answered by Ben S. • Maths tutor
3781 Views

Explain why it was difficult to reach agreement at the Potsdam Conference. [6 marks]

Events between the Yalta and Potsdam conference made it difficult to reach agreement at Potsdam. President Roosevelt died in April 1945 and was replaced by Vice-President Harry Truman. Truman was much more a...
SB
Answered by Sophie B. • History tutor
15161 Views