If 2x + 3y = 8 and xy= 2, then fins the islere of (a) (2x-3y)³
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Answer:
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Step-by-step explanation:
Correct option is A)
Given
2x+3y=8 and xy=2,
formula,
(a+b)2=a2+b2+2ab
∴(2x+3y)2=4x2+9y2+2(2x)(3y)
(2x+3y)2=4x2+9y2+12xy
82=4x2+9y2+12(2)
∴4x2+9y2=64−24=40
Answered by
0
Answer:
Correct option is A)
Given
2x+3y=8 and xy=2,
formula,
(a+b)2=a2+b2+2ab
∴(2x+3y)2=4x2+9y2+2(2x)(3y)
(2x+3y)2=4x2+9y2+12xy
82=4x2+9y2+12(2)
∴4x2+9y2=64−24=4.
Step-by-step explanation:
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