It doesn't look as if you can solve this easily with factoring; you might try completing the square, or use the quadratic formula, with a = 1, b = 34, c = 56.
Improved answer:
Presumably this is a quadratic equation in the form of x2+34x = 56.
Rearrange the equation in the form of:
x2+34x-56 = 0
Then by completing the square or using the quadratic equation formula the values of x will work out as:
x = -17- the square root of 345
or x = -17+ the square root of 345
Your maths tutor should be familiar with the above methods of solving quadratic equations if you're not too sure.
112
56 plus zero
1 + 2 + 56 = 59
56 plus 1 equals 57. == ==
65
121
90
The answer is -56
145.
56 + 36746 - 5968 + 4663745 = -4,632,911
20 + 6 - 56 = -30
56 plus 12.7 equals 68.7