can i have the answer for the question , find the value of x if 21x=(35)^{2 }- (14)^{2.}

PLZ. URGENT.

**21 x = (35) ^{2} - (14)^{2}**

**so 21x = (35 + 14 )(35 - 14) ..........by using the identity a ^{2 }- b^{2 }= (a + b)(a - b)**

**21 x = 49 * 21**

**x = 49 * 21 /21**

**x = 49**

**Hope that helps.....!!!!!!**

**Plzzz give thumbs up.........!!!!**

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