Since p = x² - 7, you can substitute/plug in p for x² - 7
So:
(x² - 7)² - 4x² + 28 = 5
(p)² - 4x² + 28 = 5 You can factor out -4 from (-4x² + 28)
p² - 4(x² - 7) = 5 Plug in p
p² - 4p = 5 Subtract 5
p² - 4p - 5 = 0 Your answer is C
Answer:
2x + 3y=-10 is incorrect (I think)
When you mulitply something with no negative you get something with no negative
Hope this helps :)
I AM HERE TO HELP >:D
Answer:
{1,2,3}
Step-by-step explanation:
The others will not show all the numbers from the set to make the inequality true