Question

10.The zeroes of x2–2x –8 are: *

note: x2 means square of x.

2 points

(a)(2,-4)

(b)(4,-2)

(c)(-2,-2)

(d)(-4,-4)

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Answer 1

Answer:

option (b)

Step-by-step explanation:

x^2-4x+2x-8

=(x-4)(x+2)

therefore zeroes are 4,-2

Answer 2

Answer:

(b) (4,-2)

Step-by-step explanation:

x²-2x-8 = 0

x²-(4-2)x-8 = 0

x²- 4x + 2x - 8 = 0

x(x -4) + 2( x- 4) = 0

(x+2) (x-4) = 0

x + 2 = 0 or x - 4 = 0

x = -2 or x = 4

So, the answer is (b) (4,-2)

Thank u