Question

Wzory skróconego mnożenia:)

1. za nawiazem to wszytsko bedzie do kwadratu

(x-4)kwadrat

(9+x)kwadrat

(x-1/4)kwadrat

(x+6y)kwadrat

(2x-5y)kwadrat

(6x+1/2y)kwadrat

2.wykonaj działania

(x+1)(x-1)

(x-2/3)(x+2/3)

(x-2y)(2y+x)

(3x+y)(y-3x)

(xkwadrat-6)(xkwadrat+6)

(2xy-5)(2xy+5)

Answer 1

1. (a+b)kwadrat= a kwadrat + b kwadrat + 2ab

    (a-b)kwadrat= a kwadrat + b kwadrat - 2ab

2. (a+b)*(a-b)=a kwadrat - b kwadrat

Answer 2

 

 

(x-4)kwadrat=x^2-8x+16

(9+x)kwadrat=81+18x+x^2

(x-1/4)kwadrat=x^2*1/2x+1/16

(x+6y)kwadrat=x^2+12xy+36y^2

(2x-5y)kwadrat=4x^2-20xy+25y

(6x+1/2y)kwadrat=36x^2+6xy+1/4y^2

 

2.wykonaj działania

(x+1)(x-1)=x^2-1

(x-2/3)(x+2/3)=x^2-4/9

(x-2y)(2y+x)=x^2-4y^2

(3x+y)(y-3x)=9x^2-y^2

(xkwadrat-6)(xkwadrat+6)

(2xy-5)(2xy+5)=4x^2y^2-25