Question

Ayuda porfa para mañana

Answer 1

Respuesta:

69.   (a+b)(a+b)= (a+b)²

70.    (6x-8x²)(6x+2)= -48x³+20x²+12x

71.     (3x+y)(4x+2y)= 12x²+10xy+2y²

72.    ( -7x²+4x)(3x+x²)= -7x^4-17x³+12x²

73.    (7/6x^5-4)(2/3x³-1/4x^6)= 7/9x^8-7/24x^11-8/3x³+x^6