Question
If x2 – xy + y2 = 16 and
x4 + x2y2 + y4 = 320 then find x2 + xy + y2 = ?Solution
Given that x2 – xy + y2 = 16 x4 + x2 y2 + y4 = 320 in equation we add and subtract x2 y2 x4 + y4+ x2 y2 + x2 y2 – x2 y2 = 320 (x2 + y2)2 – (xy)2 = 320 (x2 + y2 – xy) (x2 + y2 + xy) = 320 By using [a2 – b2 = (a + b)(a – b)] 16 × ( x2 + y2 + xy) = 320 x2 + y2 + xy = 20Â
Which technique is more useful for seeding cold clouds?
Which one of the following is NOT a quality parameter of rice grain?
Calculate the water conveyance efficiency if water delivered to the farm is 84 mm and water diverted from the source is 140 mm.
Which of the following is a highly salt tolerant crop?
The great Irish famine was caused byÂ
The four principles of organic farming do not includeÂ
Bread wheat is:
Which technique uses double stranded RNA (dsRNA) as a trigger that targets homologous mRNAs for degradation or inhibiting its transcription translation?...
Which country is the largest producer of Mango in the world?
The temporary roots in maize root system are:
Relevant for Exams:
