Question

(20+x)^2=784 find the value of x

Answer 1

Answer:

8 and -48 are the correct answers

Answer 2

➲ Fɪɴᴅ ᴠᴀʟᴜᴇ ᴏғ x :-

➠ (20 + x) ² = 784

Square Root both sides , We get,

➠ ( 20 + x) = √784

➠ (20 + x) = 28

➠ x = 28 - 20

➠ x = 18

➲ ᴠᴇʀɪғɪᴄᴀᴛɪᴏɴ :-

Put value of 'x' , We get,

➠ (20 + 18)² = 784

➠ (28)² = 784

➠ 784 = 784

L. H. S = R. H. S

Hence Verified!