Enrhifo
24x^{2}-17xy-44y^{2}
Ehangu
24x^{2}-17xy-44y^{2}
Rhannu
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28x^{2}+16xy-7yx-4y^{2}-\left(2x+8y\right)\left(2x+5y\right)
Cyfrifwch y briodoledd ddosrannol drwy luosi pob 4x-y gan bob 7x+4y.
28x^{2}+9xy-4y^{2}-\left(2x+8y\right)\left(2x+5y\right)
Cyfuno 16xy a -7yx i gael 9xy.
28x^{2}+9xy-4y^{2}-\left(4x^{2}+10xy+16xy+40y^{2}\right)
Cyfrifwch y briodoledd ddosrannol drwy luosi pob 2x+8y gan bob 2x+5y.
28x^{2}+9xy-4y^{2}-\left(4x^{2}+26xy+40y^{2}\right)
Cyfuno 10xy a 16xy i gael 26xy.
28x^{2}+9xy-4y^{2}-4x^{2}-26xy-40y^{2}
I ddod o hyd i wrthwyneb 4x^{2}+26xy+40y^{2}, dewch o hyd i wrthwyneb pob term.
24x^{2}+9xy-4y^{2}-26xy-40y^{2}
Cyfuno 28x^{2} a -4x^{2} i gael 24x^{2}.
24x^{2}-17xy-4y^{2}-40y^{2}
Cyfuno 9xy a -26xy i gael -17xy.
24x^{2}-17xy-44y^{2}
Cyfuno -4y^{2} a -40y^{2} i gael -44y^{2}.
28x^{2}+16xy-7yx-4y^{2}-\left(2x+8y\right)\left(2x+5y\right)
Cyfrifwch y briodoledd ddosrannol drwy luosi pob 4x-y gan bob 7x+4y.
28x^{2}+9xy-4y^{2}-\left(2x+8y\right)\left(2x+5y\right)
Cyfuno 16xy a -7yx i gael 9xy.
28x^{2}+9xy-4y^{2}-\left(4x^{2}+10xy+16xy+40y^{2}\right)
Cyfrifwch y briodoledd ddosrannol drwy luosi pob 2x+8y gan bob 2x+5y.
28x^{2}+9xy-4y^{2}-\left(4x^{2}+26xy+40y^{2}\right)
Cyfuno 10xy a 16xy i gael 26xy.
28x^{2}+9xy-4y^{2}-4x^{2}-26xy-40y^{2}
I ddod o hyd i wrthwyneb 4x^{2}+26xy+40y^{2}, dewch o hyd i wrthwyneb pob term.
24x^{2}+9xy-4y^{2}-26xy-40y^{2}
Cyfuno 28x^{2} a -4x^{2} i gael 24x^{2}.
24x^{2}-17xy-4y^{2}-40y^{2}
Cyfuno 9xy a -26xy i gael -17xy.
24x^{2}-17xy-44y^{2}
Cyfuno -4y^{2} a -40y^{2} i gael -44y^{2}.
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