solve the problem urgently
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7
ɢɪᴠᴇɴ :
2x + 3ʏ = 15
xʏ = 6
ᴛᴏ ғɪɴᴅ : 4x² + 9ʏ²
sᴏʟᴜᴛɪᴏɴ :
{ ᴜsɪɴɢ ɪᴅᴇɴᴛɪᴛʏ -
( ᴀ + ʙ )² = ᴀ² + ʙ² + 2ᴀʙ }
2x + 3ʏ = 15
sǫᴜᴀʀɪɴɢ ʙᴏᴛʜ sɪᴅᴇs, ᴡᴇ ɢᴇᴛ
( 2x + 3ʏ )² = ( 15 )²
( 2x )² + ( 3ʏ )² + 2 × 2x × 3ʏ = 225
4x² + 9ʏ² + 12xʏ = 225
4x² + 9ʏ² + 12 ( 6 ) = 225
4x² + 9ʏ² = 225 - 72
4x² + 9ʏ² = 153
2x + 3ʏ = 15
xʏ = 6
ᴛᴏ ғɪɴᴅ : 4x² + 9ʏ²
sᴏʟᴜᴛɪᴏɴ :
{ ᴜsɪɴɢ ɪᴅᴇɴᴛɪᴛʏ -
( ᴀ + ʙ )² = ᴀ² + ʙ² + 2ᴀʙ }
2x + 3ʏ = 15
sǫᴜᴀʀɪɴɢ ʙᴏᴛʜ sɪᴅᴇs, ᴡᴇ ɢᴇᴛ
( 2x + 3ʏ )² = ( 15 )²
( 2x )² + ( 3ʏ )² + 2 × 2x × 3ʏ = 225
4x² + 9ʏ² + 12xʏ = 225
4x² + 9ʏ² + 12 ( 6 ) = 225
4x² + 9ʏ² = 225 - 72
4x² + 9ʏ² = 153
Answered by
5
Hey dude !
Hope it is right!!!
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nilk1972:
Plz mark it brainliest
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