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Solve x^2+2x-8=0

x=-4, x=2When you see a quadratic equation like this, the first thing you should try and do is factorise it. You need to find two numbers that add together to make the second term of the equation - in this c...
KB
Answered by Kate B. • Maths tutor
12692 Views

Solve x^2+3x-18=0 for x

X=6 X=-3This simple question is the fundamental step of a vest argebra topics. Having a good understanding of this topic is crucial to studens who want to do well. Alternative method is to use quadratic form...
RL
Answered by RongFang L. • Maths tutor
3414 Views

Solve the equation, x + 1 = x/2 + 4

The answer should always end with x = …, so we need to rearrange and simplify the equation to solve this.First write out the full equation: x + 1 = x/2 + 4Multiply everything by 2 to remove the fraction: 2x ...
CJ
Answered by Cheyanne J. • Maths tutor
3163 Views

A fair sided spinner has five equal sections numbered 1 to 5, a fair six sided dice has five red faces and one green face. what is the probability of getting an even number and the colour green

The probability on the spinner for each section is 0.2 or written a 2 in 5 ( 1 divided by 5 as it has equal sections) The probability for landing the green side of the dice is 1 in 6 In order to obtain the c...
EC
Answered by Elaine C. • Maths tutor
10101 Views

Solve the following simultaneous equations. 2x + 5y = -4. 7x + y = 19

Simultaneous equations have 2 or more unknowns . This simultaneous equation has 2 unknowns, and 2 equations. This simultaneous equation can be solved using elimination or substitution. Substitution involves ...
AL
Answered by Aisling L. • Maths tutor
4243 Views