Question

If a, b, c are real numbers such that a + b + c = 0 and a2 + b + c? =1, then
(3a + 5b - 8c)2 + (-8a + 3b + 5c)2 + (5a - 8b+ 3c) is equal to
(1) 49
(2) 98
(3) 147
(4) 274​

Answer 1

Step-by-step explanation:

why the Cartesian plane is also called X-Y plane