Let P=x^2+6
PLEASE SHOW WORK!!
15 POINTS

Answer:
Step-by-step explanation:
P = x^2 + 6
[tex](x^2+6)^2 - 21 = 4x^2 + 24\\(x^2+6)^2 - 4x^2 - 45 = 0[/tex]
Solving for 4x^2:
P = x^2 +6
P - 6 = x^2
4(P - 6) = 4x^2
Substitution:
[tex]p^2 - 4p - 24 - 45 = 0\\p^2 -4p - 69 = 0[/tex]