book Maths Puzzle Numerical Ability

solve each equation for x using factoring. please show work.

x2-4x+1=13

x2+2x+48=15x

5x2+7=52

3x2=4-11x

2x3+4x=6x2

2x2-4=7x

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book Other Question

Compute the value of the discriminant and give the number of real solutions to the quadratic equation:

3x^2 - 7x + 9 = 0 Even Integers. If the sum of two consecutive integers is 86, what is the two integers.