Question

Progress: Question I The movement of the progress bar may be uneven because questions worth more or less (including zero) depending on your answer. Simplify 2.5(16÷2-2.3) - 2. 00 O 18 O 10 ○ 72 what is the answer ​

Answer 1

if x=(a+7) and y=(3x—1), show that a²=xy+49