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Factorise 5 – 10m

5(1-2m)
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Answered by Rocio C. • Maths tutor
26526 Views

Expand (x+3)(x+6)

Step 1 Using the crab methodLooking at the first bracket:Multiply x by x to give x 2 Then multiply x by 6 to give 6xThen move onto 3 Multiply 3 by x to give 3xThen multiply 3 by 6 to give 18 Add all these to...
AB
Answered by Alexandra B. • Maths tutor
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Show that (x + 1)(x + 2)(x + 3) can be written in the form ax3 + bx2 + cx + d where a, b, c and d are positive integers.

(x 2 +3x+2)(x+3) = x 3 +3x 2 +3x 2 +9x+2x+6 = x 3 +6x 2 +9x+2x
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Answered by Rocio C. • Maths tutor
3463 Views

Write 7.264 51 correct to 3 decimal places.

7.265
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Answered by Rocio C. • Maths tutor
14072 Views

What is a Binomial distribution and when, in an exam, should I use it?

The Binomial distribution is a sequence of N trials which each have a probability, p, of occurring. Each trial is either successful (with probability p) or not. It can be used to give us the probability of c...
DB
Answered by Dean B. • Maths tutor
4207 Views