Question
Which of the following insect pests is also called the
lesser grain borer?Solution
Rhizopertha dominica is also known as the lesser grain borer. It is a significant pest of stored grains and cereals, infesting a wide range of grains and causing damage by feeding on them during storage.
l. x2 - 16x + 64 = 0
II. y2Â = 64
I). p2 + 22p + 72 = 0,
II). q2 - 24q + 128 = 0
One of the roots of the equation x² – 12x + k = 0 is x = 3. The other root is ___________.
Solve the quadratic equations and determine the relation between x and y:
Equation 1: 27x² - 114x + 99 = 0
Equation 2: 18y² - 70y + 68 = 0
I. 40x² + 81x + 35 = 0
II. 63y² + 103y + 42 = 0
I. 8x – 3y = 85
II. 4x – 5y = 67
I. 6x² + 37x + 45 = 0
II. 3y² - 11y + 6 = 0
l). 3p + 2q = 27
ll). 4p - 3q = 2
I. 6x² - 23x + 7 = 0
II. 6y² - 29y + 9 = 0
If α, β are the roots of the equation x² – px + q = 0, then the value of α2+β2+2αβ isÂ
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