हल करना a + b = 7; ab = 12; a ^ 2 - ab + b ^ 2 = | Equatix - Math Solver

Fractions & Decimals

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Example

3(r+2s)=2t-4

a⋅(b-2)=3b

3(r+2s)=2t-4

a⋅(b-2)=3b

Question

$$a+b=7; ab=12; a^{2}-ab+b^{2}=?$$