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6x – 7 = 14 – x

The first thing you need to do is collect all the 'like terms' on the same side of the equation. Start with the 'x' terms and remember to reverse the signs as you cross them over to the other side. 7x - 7 =1...
JW
Answered by Jessica W. • Maths tutor
7107 Views

Factorise 2x^3=10x+12x^2

Move everything to the same side: 2x^3-12X^2-10x=0 2.Take out a factor of 2x: 2x(x^2-6x-5)=0 3.Complete the square on the quadratic: 2x[(x-3)^2-14]=0
FH
Answered by Faye H. • Maths tutor
4177 Views

Bob has £500 and gives 70% to Edmund and 40% of what is left to George. Work out how much money each person has.

Bob - £90, Edmund - £350, George - £60.
MD
Answered by Martina D. • Maths tutor
2333 Views

Solve the inequality 5x + 3 ≤ 3x − 6.

x ≤ -4.5
MD
Answered by Martina D. • Maths tutor
5331 Views

Express 9^(3x + 1) in the form 3^y , giving y in the form ax + b, where a and b are constants.

9^ (3x + 1) We know that 3 to power of 2 equals 9. 3x3 = 3^2 = 9, = 3^ (2 * [3x + 1]) We simply the term because 2 * [3x + 1] = 6x + 2 = 3^ ( 6x + 2) This term is in the form of 3^ y, so we know that y = 6x ...
WL
Answered by William L. • Maths tutor
5453 Views