POOMOCY PPROSZĘ xD wzory skroconego mnozenia xD
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)^
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
a)(4x-5)^ + (5+4x)^ = 16x² - 40x + 25 + 25 + 40x + 16x² = 32x² + 50
b)(2x-1)^ - 4(x-3)(x+3) = 4x² - 4x + 1 - 4x² + 36 = 37 - 4x
c)(x+2y)^-(x+2y)(x-2y)+2(x-2y)^+4xy = x² + 4xy + 4y² - x² + 4y² + 2x² - 8xy + 8y² + 4xy = 2x² + 16y²
d)(a-2b)(3a+b)-3(a-b)^= 3a² + ab - 6ab - 2b² - 3a² + 6ab - 3b² = ab - 5b²