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Complete the square for the following equation: 2x^2+6x-3=0

2x2+6x-3=0To begin, we need to make sure x2 is by itself, meaning that we divide the whole equation by 2. So from here we get (2x2+6x-3=0) / 2 = x2+3x-3/2=0. No...

Answered by Maths tutor
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What is a rhetorical question

A rhetorical question is a question you ask someone, but you do not expect or need an answer. Often you know the answer to the question already. They are often used in emotive writing to emphasise particu...

Answered by Maddie M. English tutor
4469 Views

Expand (x+3)(x+2)

(x+3)(x+2)=F=xx= x^2O=x2=2xI=3x=3xL= 3*2=6=x^2 + 2x + 3x + 6= x^2 + 5x + 6

Answered by Nicola S. Maths tutor
3793 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=-...

Answered by Rabia D. Maths tutor
4320 Views

Define systematic and opportunity sampling and state one difference between them.

Systematic sampling refers to a way of choosing participants for a study by taking a list of all participants in a population and choosing every nth number from the list. For example, every 10th or 15th p...

Answered by Psychology tutor
4558 Views

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