Top answers

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
17322 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
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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
4399 Views

How do I solve two simultaneous equations?

Supposing we have two equations x+2y=5 and 3x-y=10 and we want to find x and y we can use the following techinque. Multiply both the RHS and the LHS of the second equation by 2, giving us 6x-2y=20. Then add ...
TX
Answered by Theano X. • Maths tutor
4572 Views

How do you find the tangent of an angle in a right-angled triangle?

Divide the length of the opposite side by the length of the adjacent side
LW
Answered by Lydia W. • Maths tutor
3909 Views