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Expand (x+3)(x+2)

(x+3) (x+2)=F=x x= x^2O=x 2=2xI=3 x=3xL= 3*2=6=x^2 + 2x + 3x + 6= x^2 + 5x + 6
NS
Answered by Nicola S. • Maths tutor
5236 Views

Solve the simultaneous equation: 3x+2y=8 and 2x+5y=-2

3x+2y=8 (1)2x+5y=-2 (2)So you need to have a common multiple of either x or y in this example I’ll equate the x of both equations so I’ll multiply (1) by 2 and (2) by 3 2( 3x+2y=8). 6x+4y=16 (3).3(2x+5y=-2) ...
RD
Answered by Rabia D. • Maths tutor
5801 Views

Find the exact solution of the following equation: e^(4x-3) = 11

x= (3 + ln(11))/4
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Answered by Sarah E. • Maths tutor
4109 Views

I am struggling understanding how to differentiate negative indices. I get confused with the power increasing or decreasing.

Hi there, this is a common confusion so don't worry. It is helpful to write out a number line when differentiating and drawing an arrow to show which way the power is moving. <---- differentiate----3 -2 -...
LB
Answered by Lucy B. • Maths tutor
4220 Views

Solve the equation x^{2}-2x-15 = 0

The general format for an equation of this type is ax 2 +bx+c Firstly you should factor the equation. Since in the example given a=1 you know that there will be a single x term in each factor. So you have (x...
EH
Answered by Ella H. • Maths tutor
4332 Views