Question

please fro please let me explain​

Answer 1

Step-by-step explanation:

1) a² + b² + 4ab put a = 4 and b = - 3

=> 4² + (-3)² + 4 * 4 * (-3)

=> 16 + 9 - 48

=> 25 - 48

=> - 23

similarly

3 (1) -3x² - 4y² + 6z² put x = 2, y = -3 , z = -4

=> -3(2)² - 4(-3)² + 6(-4)²

=> -12 - 36 - 96

=> - 144