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x=6
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3\sqrt{2x-3}=11-2\sqrt{7-x}
Tynnu 2\sqrt{7-x} o ddwy ochr yr hafaliad.
\left(3\sqrt{2x-3}\right)^{2}=\left(11-2\sqrt{7-x}\right)^{2}
Sgwariwch ddwy ochr yr hafaliad.
3^{2}\left(\sqrt{2x-3}\right)^{2}=\left(11-2\sqrt{7-x}\right)^{2}
Ehangu \left(3\sqrt{2x-3}\right)^{2}.
9\left(\sqrt{2x-3}\right)^{2}=\left(11-2\sqrt{7-x}\right)^{2}
Cyfrifo 3 i bŵer 2 a chael 9.
9\left(2x-3\right)=\left(11-2\sqrt{7-x}\right)^{2}
Cyfrifo \sqrt{2x-3} i bŵer 2 a chael 2x-3.
18x-27=\left(11-2\sqrt{7-x}\right)^{2}
Defnyddio’r briodwedd ddosbarthu i luosi 9 â 2x-3.
18x-27=121-44\sqrt{7-x}+4\left(\sqrt{7-x}\right)^{2}
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(11-2\sqrt{7-x}\right)^{2}.
18x-27=121-44\sqrt{7-x}+4\left(7-x\right)
Cyfrifo \sqrt{7-x} i bŵer 2 a chael 7-x.
18x-27=121-44\sqrt{7-x}+28-4x
Defnyddio’r briodwedd ddosbarthu i luosi 4 â 7-x.
18x-27=149-44\sqrt{7-x}-4x
Adio 121 a 28 i gael 149.
18x-27-\left(149-4x\right)=-44\sqrt{7-x}
Tynnu 149-4x o ddwy ochr yr hafaliad.
18x-27-149+4x=-44\sqrt{7-x}
I ddod o hyd i wrthwyneb 149-4x, dewch o hyd i wrthwyneb pob term.
18x-176+4x=-44\sqrt{7-x}
Tynnu 149 o -27 i gael -176.
22x-176=-44\sqrt{7-x}
Cyfuno 18x a 4x i gael 22x.
\left(22x-176\right)^{2}=\left(-44\sqrt{7-x}\right)^{2}
Sgwariwch ddwy ochr yr hafaliad.
484x^{2}-7744x+30976=\left(-44\sqrt{7-x}\right)^{2}
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(22x-176\right)^{2}.
484x^{2}-7744x+30976=\left(-44\right)^{2}\left(\sqrt{7-x}\right)^{2}
Ehangu \left(-44\sqrt{7-x}\right)^{2}.
484x^{2}-7744x+30976=1936\left(\sqrt{7-x}\right)^{2}
Cyfrifo -44 i bŵer 2 a chael 1936.
484x^{2}-7744x+30976=1936\left(7-x\right)
Cyfrifo \sqrt{7-x} i bŵer 2 a chael 7-x.
484x^{2}-7744x+30976=13552-1936x
Defnyddio’r briodwedd ddosbarthu i luosi 1936 â 7-x.
484x^{2}-7744x+30976-13552=-1936x
Tynnu 13552 o'r ddwy ochr.
484x^{2}-7744x+17424=-1936x
Tynnu 13552 o 30976 i gael 17424.
484x^{2}-7744x+17424+1936x=0
Ychwanegu 1936x at y ddwy ochr.
484x^{2}-5808x+17424=0
Cyfuno -7744x a 1936x i gael -5808x.
x=\frac{-\left(-5808\right)±\sqrt{\left(-5808\right)^{2}-4\times 484\times 17424}}{2\times 484}
Mae’r hafaliad hwn yn y ffurf safonol: ax^{2}+bx+c=0. Amnewidiwch 484 am a, -5808 am b, a 17424 am c yn y fformiwla gwadratig, \frac{-b±\sqrt{b^{2}-4ac}}{2a}.
x=\frac{-\left(-5808\right)±\sqrt{33732864-4\times 484\times 17424}}{2\times 484}
Sgwâr -5808.
x=\frac{-\left(-5808\right)±\sqrt{33732864-1936\times 17424}}{2\times 484}
Lluoswch -4 â 484.
x=\frac{-\left(-5808\right)±\sqrt{33732864-33732864}}{2\times 484}
Lluoswch -1936 â 17424.
x=\frac{-\left(-5808\right)±\sqrt{0}}{2\times 484}
Adio 33732864 at -33732864.
x=-\frac{-5808}{2\times 484}
Cymryd isradd 0.
x=\frac{5808}{2\times 484}
Gwrthwyneb -5808 yw 5808.
x=\frac{5808}{968}
Lluoswch 2 â 484.
x=6
Rhannwch 5808 â 968.
3\sqrt{2\times 6-3}+2\sqrt{7-6}=11
Amnewid 6 am x yn yr hafaliad 3\sqrt{2x-3}+2\sqrt{7-x}=11.
11=11
Symleiddio. Mae'r gwerth x=6 yn bodloni'r hafaliad.
x=6
Mae gan yr hafaliad 3\sqrt{2x-3}=-2\sqrt{7-x}+11 ateb unigryw.
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