Question

Please answer 6 and 7 fast

Answer 1

Q6.

(a(y^2)+3xy-9(x^2)-(-4(y^2)+8xy
+b(x^2)=10(y^2)-5xy-10x(y^2)

(a+4)(y^2)-5xy-(9+b)(x^2)=10(y^2)-5xy-10x(y^2)
On comparison we get
a+4=10,9+b=0
On solving we get
a=6,b=-9

Q7.

Area of shaded region =Area of square - Area of triangle
Area=(4(x^2)-2x-6)-((x^2)-4x+5)

Area =3(x^2)-2x-11