Answer:
Step-by-step explanation:
by idetity : (a - b)²= a² +b² -2ab
for : (x² - 5)² you have a = x² and b = 5
(x² - 5)²= (x²)²+5² - 2(5)(x²)
(x² - 5)²= x^4+25 -10x²
Answer:
40
Step-by-step explanation:
Here's my step-by-step explanation:
We're just gonna factor.
If your teacher has spoken of FOIL, then he/she has probably said that it means First Outer Inner Last and that it helps with distributing problems like these.
Right, so let's get to it.

Can you see the FOIL method being spread out here? Let's keep going.

Hope this helps, and let me know if I made a mistake! ^_^
The 7 before the decimal would be classified as a tenth
783-366=417
Difference = Subtraction