Answer:
For number 5 . a= 3 and b = -1
Answer:
-xy+5x2(power of x is 2)y
Step-by-step explanation:
-xy+5x2y
Answer:
About 62.1371
Step-by-step explanation:
Just by the language difference means subtract,
Y^2-25 is the difference of squares
factored it's the sum and difference of their square roots
(x+5) (x-5)
Answer:
4262
Step-by-step explanation:
2 + 7x^2- 2x^3-8x +7x^4 at x = 5
= 2 + 7*(5)^2 - 2*(5)^3-8*5 +7*(5)^4
=2+175-250-40+4375
=4552-290
=4262
