Question

(v)4x^ 2 -5xy-3y^ 2 +9x^ 2 +7y-6y^ 2 +-2x^ 2 -9xy+13y^

Answer 1

20x2 – 31x + 12 = 0

20x2 – 16x – 15x + 12 = 0

So x = 3/4, 4/5

6y2 – 7y + 2 = 0

6y2 – 3y – 4y + 2 = 0

So y = 1/2, 2/3