Question

Desarrolla(10xy+6)(10xy-15)
a) 100x²y²+90xy+90 b)100x²y²-90xy+90 c) 100x²y²-90xy-90 d) 100x²y²+90xy+90

e)100x²y²+90xy-21
procedimiento

Answer 1

(10XY + 6)(10XY - 15)

= [(10XY)(10XY) + (10XY)(-15) + 6(10XY) + (6)(-15)]

= [(100X²Y²) - 150XY + 60XY - 90]

= 100X²Y² - 90XY - 90

Rta: C