3. 5mn ( 2m + 6n + 1 )
4. 4a^3b^2c ( 18a^2b - 8c )
5. (X-15)(X+15)
6. -4(y-4.5)(y+4.5)
8. 2X(X-10)(X+10)
i am not sure if no. 8 is right
It c) because it 56 out of 100
Answer:
the correct answer is b
Step-by-step explanation: i just did the same question
X = 6
<span>6+8x/2 = 30 if x = 6 and 5x = 30 if x =6</span>