Question

BŁAGAM SZYBKOOO !! wzory skroconego mnozenia

Wykonaj działania

a)(4x-5)^ + (5+4x)^

b)(2x-1)^ - 4(x-3)(x+3)

c)(x+2y)^-(x+2y)(x-2y)+2(x-2y)^+4xy

d)(a-2b)(3a+b)-3(a-b)^

Answer 1

 

a)(4x-5)^ + (5+4x)^ = 16x^-40x+25+25+40x+16x^=32x^+50

b)(2x-1)^ - 4(x-3)(x+3) = 4x^-4x+1-4(x^-9)=4x^-4x+1-4x^+36=-4x+37

c)(x+2y)^-(x+2y)(x-2y)+2(x-2y)^+4xy = x^+4xy+4y^-x^+4y^+2(x^-4xy+4y^)+4xy=x^+4xy+4y^-x^+4y^+2x^-8xy+8y^+4xy=2x^+16y^

d)(a-2b)(3a+b)-3(a-b)^=3a^+ab-6ab-2b^-3(a^-2ab+b^)=3a^+ab-6ab-2b^-3a^+6ab-3b^=-5b^+ab