Answer:
10 + 5xy = -80
Step-by-step explanation:
10 + 5xy = ?
x = 9 and y = -2
10 + 5xy = 10 + 5(9)(-2)
= 10 - 90
= -80
D. 7x2+3y2+4x+4x2−4y+2 is your correct answer
-3x² + 3y² + 4x + 4x² - 4y + 2
Add like terms.
x² + 3y² + 4x - 4y + 2
So the answer is D.
16y3/20y4 (that's a y to the third power for sixteen and a y to the fourth power for twenty)
6xy/16y
Abc/10abc
Mn2/pm5n (that's an n to the second power for nm and a m to the fifth power on pmn)
12h3k/16h2k2 ( that's a h to the third power for 12hk and a h to the second power and k to the second power for 16hk
8x/10y
24n2/28n ( that's a n to the second power)
30hxy/54kxy
5jh/15jh3 (that's a h to the third power for 15jh)
20s2t3/16st5 ( that's a a to the second power and t to the third power for 20st and t to the fifth power for 16st)