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10x^2+4xy-15xy-6y^210x^2-11xy-6y^2

1. change mixed numbers into improper fractions 3 3/4 = 12/4 + 3/4 = 15/4 4 6/7 = 14/7 + 6/7 = 20/7
   2) multiply improper fractions(15 x 20) / (4x7) = (300) / (28)
   3) simplify 75/7
   4) con...

12y^2-2y-28y+32y(6y-1)-3(6y-1)(2y-3)(6y-1)

£5 = 500 p1 Pencil = 8p1 ruler= 30pIf she is buying 15 Pencil , it will be= 8 *15= 120p, 380 p remains ( 500p-120p= 380p) 360p / 30 = 12 rulers this will give you a chang...

x² - x - 12 = 0Factorise to get (x-4)(x+3)=0This gives (x-4)=0 or (x+3)=0So x=4 or x=-3