solve the following equation: x^2 - 7x -15 = 3

Rearrange the equation so x^2 - 7x -18 = 0, then simplify into (x-9)(x+2)=0 -> x=9 or x=-2

JS

Related Maths 13 Plus answers

All answers ▸

What is the solution to the inequality shown? 3m + 5 > 2 (m-7)


How would I solve this (2/3) / (3/4)


At the shop, Max buys 5 juice boxes and 12 sweets which costs him £1.34 in total. If x represents the cost of one juice box (in pence) and y represents the cost of one sweet (in pence), write out an equation, in terms of x and y, to show this


Simplify the following expression fully: 4x + 5y + 6x - 7y