answer:first of all, correct term is to factor, not to factorise. Secondly, while you are right that because 29 is a prime number this cannot be easily factored, you can always use the quadratic formula… ay^2 + by + c y = [negb +/- sqrt(b^2–4ac)]/2a in this case, [neg4 +/- sqrt(16 + 145)]/10 =neg4/10 +/- sqrt(1.61)... this formula gives you the factors of the equation, what y= such that the equation holds…you can use this to factor the equation.