Answer:
12.
Square root = 37,
Step-by-step explanation:
40^2 = 1600
35^2 = 30 * 40 + 25 = 1225
So the requred square is between 35 and 40
38^2 = 1444
37^2 = 1369 - so its this one.
Required difference = 1381 - 1369 = 12.
<span>The answer should be (12x + 20) (2x + 5)</span>
Answer:
60x + 25 + 60y
Step-by-step explanation:
60 times x plus 60 times y plus 25