Question

$51x^{2} -49x^{2}$

Answer 1

Answer:

${51x}^{2} - {49x}^{2}$

$(51 - 49) {x}^{2}$

$2 {x}^{2}$

Ans. 2x^2

Hope it helps.

Answer 2

$= {51x}^{2} - {49x}^{2}$

$= {x}^{2} (51 - 49)$

$= {x}^{2} (2)$

$= 2 {x}^{2}$