Answer:
x² +18x +81
Step-by-step explanation:
(a+b)²=a²+b²+2ab
(x+9)² = x²+9²+2*x*9= x² +18x +81
Answer:
the answer is 12b
Step-by-step explanation
Multiply 4 by 3 and keep b
Answer:
£11407
Step-by-step explanation:
8500×5.7/100×6=x+8500
Brainliest would be appreciated :))