Question

add:7x square+18x square -3 x square+5 x square​

Answer 1

Answer:

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Step-by-step explanation:

$7 {x}^{2} + 18 {x}^{2} - 3 {x}^{2} + 5 {x}^{2} \\ \\ taking \: \: {x}^{2} \: \: as \: \: common\\ \\ (7 + 18 - 3 + 5) {x}^{2} \\ \\ (27) {x}^{2} \\ \\ \\ \therefore \: \: 7 {x}^{2} + 18 {x}^{2} - 3 {x}^{2} + 5 {x}^{2} = 27 {x}^{2}$