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Solve the quadratic equation, x^2 - 4x -5 = 0

Solve x 2 - 4x - 5 = 0 A very full explanation would be: Start by listing the pairs of numbers that can be multiplied together to get 1 * -5 = -5 (i.e. the coefficient of the first term multiplied by the las...
RH
Answered by Ryan H. • Maths tutor
5979 Views

Outline the consequences of the building of the Berlin Wall in August 1961. (6 marks)

For this question, as it is worth six marks, I would expect the student to provide three well backed-up points with substantial evidence to obtain all the marks available. They may provide both short-term co...
SA
Answered by Sam A. • History tutor
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Solve for y and x, where x=y+1 and y=2x+3

Simultaneous equations: x=y+1 y=2x+3 First solve for x. y=2x+3 so first equation becomes: x=(2x+3)+1 x-2x-3-1=0 -1x-4=0x+4=0 x=-4 Solve for y: y=2x+3 y=2(-4)+3 y=-8+3y=-5
TS
Answered by Tom S. • Maths tutor
4409 Views

List 5 features of an animal cell and the function they have within the cell

Nucleusoften referred to as 'brain' of the cellStores the DNA/genetic materialControls cellular processes within the cellMitochondriaOften referred to as the 'powerhouse' of the cellGenerates energy for the ...
AE
Answered by Adelaide E. • Biology tutor
3356 Views

Solve the simultaneous equations 2x + y = 7 and 3x - y = 8

There are three methods for solving simultaneous equations: elimination, substitution and by using graphs.Elimination is a good method in this case as the y terms are equal in both equations. We just add the...
TJ
Answered by Tia J. • Maths tutor
7874 Views