Question

URGENNTEEEE 7: Efetue os Monômios: A) (7x)+ (-3X)= B)(7X)-(+7X) C) 6a-4a D) (3x⁴)•(-5x³) E) (-4a)•(3a) F) (21X⁶) ÷(-7x⁴) G) (15x⁶) ÷3x²)

Answer 1

a) ( 7x ) + ( - 3x ) = 7x - 3x = 4x

b) ( 7x ) - ( + 7x ) = 7x - 7x = 0

c) 6a - 4a = 2a

d) ( 3x⁴ ) • ( - 5x³ ) = ( 3 • - 5 ) • ( x⁴ • x³ ) = - 15x^7

e) ( - 4a ) • ( 3a ) = ( - 4 • 3 ) • ( a • a ) = - 12a²

f) ( 21x⁶ ) ÷ ( - 7x⁴ ) = ( 21 ÷ - 7 ) • ( x⁶ ÷ x⁴ ) = - 3x²

g) ( 15x⁶ ) ÷ 3x² = ( 15 ÷ 3 ) • ( x⁶ ÷ x² ) = 5x^4