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Expand and simplify (m + 3)(m + 10)

(m+3)(m+10) m 2 + 3m+ 10m + 30 m 2 +13m+ 30
LB
Answered by Laura B. • Maths tutor
17240 Views

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

9= 3 2 so 9 3x+1 = 3 2(3x+1) = 3 6x+2 y= 6x+2 where a=6 and b=2
LB
Answered by Laura B. • Maths tutor
20101 Views

Express (16x+78)/(2x^2+25x+63) as two fractions

Firstly factorise the denominator to get (2x+7)(x+9). Then make the fraction equal to the seperate fractions with constants. E.g 16x+78/2x^2+25x+63=A/(2x+7)+B/(x+9). then multiply accross by the denominator ...
GD
Answered by Georgia D. • Maths tutor
4028 Views

How do you expand (2x+9)^2?

(2x+9) 2 = (2x+9)(2x+9) Use FOIL to expand these brackets: First - ( 2x +9)( 2x +9) --> 4x 2 Outside - ( 2x +9)(2x+ 9 ) --> 4x 2 + 18x Inside - (2x +9 )( 2x +9) --> 4x 2 + 18x + 18x Last - (2x +9 )(...
AM
Answered by Alec M. • Maths tutor
9238 Views

5x - 2 > 3x + 11

Firstly we need to get all the x's on one side and the numbers on the other side. So if we add 2 to both sides we get 5x > 3x + 13. Now as we want the x's on the right hand side, we need to subtract both ...
SC
Answered by Sam C. • Maths tutor
4309 Views