If the square of (a + b) is 9 and the square of 11 (a-b) is 4, the value of AB is (?) a 5 / 4 B minus 4 / 5 C 1 D minus 1 2 if | 2a-3 | + If the square of (a + b) is 9 and the square of 11 (a-b) is 4, the value of AB is (?) A 5/4 B negative 4 / 5 C 1 D minus 1 If the square of | 2a-3 | + (B-3) is 0, then the coordinate of a (a, b) with respect to X is (?)

If the square of (a + b) is 9 and the square of 11 (a-b) is 4, the value of AB is (?) a 5 / 4 B minus 4 / 5 C 1 D minus 1 2 if | 2a-3 | + If the square of (a + b) is 9 and the square of 11 (a-b) is 4, the value of AB is (?) A 5/4 B negative 4 / 5 C 1 D minus 1 If the square of | 2a-3 | + (B-3) is 0, then the coordinate of a (a, b) with respect to X is (?)

(a+b)^2=9
a^2+2ab+b^2=9（1）
11(a-b)^2=4
a^2-2ab+b^2=4/11（2）
(1)-(2)
4ab=9-4/11
ab=95/44
The condition of the equation is that both terms are equal to 0
2a-3=0
b-3=0
a=3/2,b=3
X coordinate (3 / 2,3)