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solve x/2 + 11 = 15

whenever we solve an equation we want to get the unknown (x) alone on one side of the equals sign, but remember whatever we do to one sign of the equation, we have to do to the other. So lets start by subtra...
SP
Answered by Samir P. Maths tutor
7149 Views

Solve this inequality 4y - 3 ≥ 5

1 - We treat an inequality sign like an equals sign (unless we divide by a negative number). 2 - Rearrange the inequality to get all the ys on one side and all the numbers on the other side. 3 - Simplify to ...
GA
Answered by Gadah A. Maths tutor
8594 Views

Solve 5x - 2= 3x + 7

1 - First we need to get all the x values on one side and all the numbers on the otherside of the equals sign. 2 - We then need simplify the equation to get 1 x. Solve 5x - 2= 3x + 7 1 - Remember, whatever y...
GA
Answered by Gadah A. Maths tutor
16459 Views

Find the equation of the tangent to the curve y=x^3-4x^2+2 at the point (3,-7)

y=x 3 -4x 2 +2A tangent to a curve at a specific point along the line will have excatly the same gradient as the curve at that point. For example if the point was (0,0) the tangent would just be a horizontal...
DW
Answered by Daniel W. Maths tutor
25076 Views

Factorise 2b^2 + 6b

1 - We first need to find a common factor, something that is the same in both parts of the expression. 2 - Then we need to take this out of the expression by dividing both parts of the expression by the comm...
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Answered by Gadah A. Maths tutor
8166 Views