Resolver 30(x)^(2)-42(x)^(2)-(35)^(2)+49x+5x-7 | Equatix - Math Solver

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Example

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

a⋅(b-2)=3b

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

a⋅(b-2)=3b

Question

$$30 { x }^{ 2 } -42 { x }^{ 2 } - { 35 }^{ 2 } +49x+5x-7$$