Question

Tanya no 26 donk........

Answer 1

4x-y+5=0 ×2

8x-2y+10=0
3x+2y+12=0
________+
11x +22=0
11x = -22
x = -2

3.-2+2y=-12
6+2y =-12
2y = -12-6
y = -6/2=-3

q^2 -p^2= -3^2 - (-2^2)= 9-4=5
jawab = a. 5