Expand and simplify 5(x+4)-3(2+3x)
5(x+4)-3(2+3x)
Expand first bracket
5x+20-3(2+3x)
Expand second bracket
5x+20-6-9x
simplify
14-4x
JF
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The perimeter of a right-angled triangle is 72 cm. The lengths of its sides are in the ratio 3 : 4 : 5 Work out the area of the triangle.
3x+18=14x+2
Please expand the brackets in the following equation to get a quadratic equation. Then, please show using the quadratic formula that the solutions to the equation are x=3 and x=5. Here is the starting equation: (x-3)(x-5)=0