Question

solve the system by cross multiplication method X upon A plus Y upon B is equals to a + b, X upon A square plus Y upon B square is equal to 2

Answer 1

Answer:

The value of 2×X^A×Y^B =2-(a+b)²

Step-by-step explanation:

X^A + Y^ B = a+b

X^A² + Y^B²=  (X^A+ Y^B)²  -2×X^A×Y^B

 2=  (a+b)² - 2×X^A×Y^B

2×X^A×Y^B =2-(a+b)²