c) \( 12 b^{2} c^{2}-3 b c-5 b^{2} \) d) \( -a x^{2}+7 a^{2} x+2 a x \) e) \( 3 y^{4}-0,2 y^{2}-1+ \) ä) \( -7 a b^{3}+5 a^{2} b^{2}- \) 58. Añlatmalary a) \( 7 x y-10 x-4 x y \) b) \( a^{4}+2 a^{3}-4 a^{4}+ \)

Let's simplify the expressions you provided step by step. ### c) \( 12 b^{2} c^{2} - 3 b c - 5 b^{2} \) To simplify this expression, we can rearrange and combine like terms: 1. Group the terms: \[ 12 b^{2} c^{2} - 5 b^{2} - 3 b c \] 2. There are no like terms to combine further, so the expression remains: \[ 12 b^{2} c^{2} - 5 b^{2} - 3 b c \] ### d) \( -a x^{2} + 7 a^{2} x + 2 a x \) To simplify this expression, we can combine the like terms involving \( x \): 1. Combine \( 7 a^{2} x + 2 a x \): \[ -a x^{2} + (7 a^{2} + 2 a) x \] 2. The simplified expression is: \[ -a x^{2} + (7 a^{2} + 2 a) x \] ### e) \( 3 y^{4} - 0.2 y^{2} - 1 \) This expression can be simplified by noting that \( -0.2 y^{2} \) is already in its simplest form: 1. The expression remains: \[ 3 y^{4} - 0.2 y^{2} - 1 \] ### ä) \( -7 a b^{3} + 5 a^{2} b^{2} - \) It seems like this expression is incomplete, but we can still write it as is: 1. The expression remains: \[ -7 a b^{3} + 5 a^{2} b^{2} \] ### 58. Añlatmalary #### a) \( 7 x y - 10 x - 4 x y \) To simplify this expression, we can combine like terms: 1. Combine \( 7 x y - 4 x y \): \[ (7 - 4) x y - 10 x = 3 x y - 10 x \] 2. The simplified expression is: \[ 3 x y - 10 x \] #### b) \( a^{4} + 2 a^{3} - 4 a^{4} + \) To simplify this expression, we can combine like terms: 1. Combine \( a^{4} - 4 a^{4} \): \[ (1 - 4) a^{4} + 2 a^{3} = -3 a^{4} + 2 a^{3} \] 2. The simplified expression is: \[ -3 a^{4} + 2 a^{3} \] If you have any further questions or need additional assistance, feel free to ask!