Which of the following is also known as downy mildew

What will come in the place of question mark (?) in the given expression?

(12.09)² × 5.98 ÷ 26.95 = ? + 25 

What will come in the place of question mark (?) in the given expression?

48 X 2.5 + 20% of 150 = ? + 166

What value should come in the place of (?) in the following questions?

320 + 16² – 55% of 720 = 5 * ?²

24² + 18 × 8 – ? = 356

50 ÷ 2.5 × 64 + ? = 1520

Simplify the expression:

(9x² - 25) / (3x + 5)

1024 ÷ 32 = 2^(1/2)×?

240 × 2.5 + 65 × 2/13 = ?² - √225