Question

Fill ups

a: (a+b)^2 + (a-b)^2 = _______

b: 27x^2 + By^2 = (3x + 2y) (_________)

c: A ponit is _______ quadrant has positive abscissa and negative ordinate.

d: The coordinates origin is _________.

e: Equator of y axis is _________.​

Answer 1

Answer:

a: 2a² + 2b²

c: 4th quadrant

d: (0,0)

some questions are incomplete

Answer 2

(a+b)^2 + (a-b)^2 = a² + b²

9x^2 - 4y^2 = (3x + 2y) (3x - 2y)

A point is (2,-4( quadrant has positive abscissa and negative ordinate.

The coordinates origin is ( 0_0 )

Equator of y axis is x