Question

How much is 0 greater than -a2-ab+7b2 ? please solve this question​

Answer 1

hey mate your answer plz mark as brainlist

• Solution:
• Let k be one of the root of the given equation.
• According to the problem,
• 1/k will be the other root of the given equation.
• We know that, product of the roots of the equation = c/a.
• Therefore, k × 1/k = c/a.
• or, 1 = c/a.
• or, a = c [multiplying a on both sides].
• The roots of the equation ax2 + bx + c = 0 will be reciprocal if a = c.
• Therefore, a = c or c = a.
• Answer: (c)
• 3. If 8 ∙ 2x = 5(y+8), then when y = -8, x = 
• (a) -4, (b) -3, (c) 0, (d) 4, (e) 8
• Solution:
• 8 ∙ 2x = 5(y+8).
• or, 8 ∙ 2x = 5(-8+8).
• or, 2x = 50.
• or, 2x = 1 [anything to the power 0 is 1 then, 50 = 1].
• Taking log on both sides,
• log 2x = log 1.
• or, x log 2 = 0 [since log 1 = 0].
• or, x = 0/log 2 [dividing log 2 on both sides].
• Therefore, x = 0.

Answer 2

Answer:

very much greater is zero than above