Correct Answer: Option A

Explanation

2x + y = 4......(i)

x^2 + xy = -12........(ii)

from eqn (i), y = 4 - 2x

= x2 + x(4 - 2x)

= -12

x2 + 4x - 2x2 = -12

4x - x2 = -12

x2 - 4x - 12 = 0

(x - 6)(x + 2) = 0

sub. for x = 6, in eqn (i) y = -8, 8

=(6,-8); (-2, 8)

• what is the fluid in the eye calles? Answer this

  1 Answers   ·   Biological Science   ·   1 hour ago
• which school is the richest school in Nigeria? Answer this

  1 Answers   ·   23 hours ago
• how does post utme looks like and what are the subjects required for a medical student? Answer this

  1 Answers   ·   23 hours ago