1.

If x= 1, y = 2 and z = 5, find thevalue of x2 + y2 + z2+ 2xyz.​

Answer»

☆ɢɪᴠᴇɴ:

  • ᴢ=5

☆ᴛᴏ ғɪɴᴅ:

  • x²+ʏ²+ᴢ²+2xʏᴢ

☆sᴏʟᴜᴛɪᴏɴ:

x²+y²+z²+2xyz

: .(1)²+(2)²+(5)²+2×1×2×5

: .1+4+25+20

: .50



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