Identify the segment in the sentence, which contains the grammatical error.

The author’s new novel, which is about social change, will launched soon.

(`sqrt(224.95)` `xx` `sqrt(440.89)` ) + (`sqrt(783.82)` `xx` `sqrt(440.87)` ) = ? + 150.03% of 120.33 - 139.86% of 1249.88

(20.98% of 299.99) - 4.998 = √?

59.978% of 800.315 - 229.95 = ? - 24.95% of 200.15

8.99² + (5.01 × 4.98) + ? = 224.03

90.004% of 9500 + 362 = ?

30.11% of 149.99 + √ 143.97 ÷ 12.02 = ?

(24.88% of 4879.79) + 20.030 × 13.88 of 13.86 + 46.21 = ? + (13.22)²

1314.04 – 450.18 + 359.98 ÷ 12.06 = ?

56.05 ² – 24.24 ² + (63.98) ^3/2 – 32.28% of 1500 = ? ² + 113.03 × 5.09 

(?)² + 4.11³ = 25.9² – 32.03