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Multiply equation 1) by 2 : 12a+2b=32. There are alternate signs of b and so therefore add the equations together: 17a=51. Solve for a: a=3. Sub a into one of the equations to find b: 5*3-2b=19b=-2. The f...

Expand by multiplying out the brackets (using crab claws or similar method): 18x^2 + 30x - 12x -20Simplify by combining like terms: 18x^2 + 18x -20

Answer is 243cm². 2+3+4 = 981/9 = 9Non-hypotenuse sides of triangle are therefore length (9x2=18) and (9x3=27)Area of triangle is (18x27)/2 = 243

The aim of solving an algebraic equation (such as x²=4(x-3)² ) is to find the values of x which make the equation correct. There are easy steps to follow for every question which can...

Using the quadratic equation with a = 6, b = 17 and c = -39, x is found to be 1.5 or -4.33