Question

Спростіть вираз. : а) с(с²+3с)-3с²;б)-5х(х²+3х-4)-20х;в)2а(3а-4b)+8ab-2a²;г) -4аb+2a(2b+3)-6a. Срочно, пожалуйста!

Answer 1

Ответ:

а)с3

б)-5х3-15сх

в)4а2

г)0

Объяснение:

а)с3+3с2-3с2

б)-5х3-15сх

в)6а2-8аb+8ab-2a2

г)-4ab+4ab+6ab+6a-6a

Answer 2

Simplifying Expressions

a) To simplify the expression s(c² + 3c) - 3c², we can start by distributing the s to both terms inside the parentheses:

s(c² + 3c) - 3c² = sc² + 3sc - 3c²

b) For the expression -5x(x² + 3x - 4) - 20x, we can apply the distributive property as well:

-5x(x² + 3x - 4) - 20x = -5x³ - 15x² + 20x - 20x = -5x³ - 15x²

c) To simplify 2a(3a - 4b) + 8ab - 2a², we can distribute the 2a to both terms inside the parentheses:

2a(3a - 4b) + 8ab - 2a² = 6a² - 8ab + 8ab - 2a² = 4a²

d) Finally, for the expression -4ab + 2a(2b + 3) - 6a, we can distribute the 2a to both terms inside the parentheses:

-4ab + 2a(2b + 3) - 6a = -4ab + 4ab + 6a - 6a = 0

Therefore, the simplified expressions are: a) sc² + 3sc - 3c² b) -5x³ - 15x² c) 4a² d) 0

Please let me know if you need further clarification or assistance!