Issolvi (x-2y)(x+2y)-4(y^2+1) | Microsoft Math Solver

Evalwa

Espandi

Kwizz

Algebra

5 problemi simili għal:

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Sehem

Ikkupjat fuq il-klibbord

x^{2}-\left(2y\right)^{2}-4\left(y^{2}+1\right)

Ikkunsidra li \left(x-2y\right)\left(x+2y\right). Il-multiplikazzjoni tista' tiġi ttrasformata fid-differenza tal-kwadrati li jużaw ir-regola: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}.

x^{2}-2^{2}y^{2}-4\left(y^{2}+1\right)

Espandi \left(2y\right)^{2}.

x^{2}-4y^{2}-4\left(y^{2}+1\right)

Ikkalkula 2 bil-power ta' 2 u tikseb 4.

x^{2}-4y^{2}-4y^{2}-4

Uża l-propjetà distributtiva biex timmultiplika -4 b'y^{2}+1.

x^{2}-8y^{2}-4

Ikkombina -4y^{2} u -4y^{2} biex tikseb -8y^{2}.