Question

factorise x square - 4 x minus 5 ​

Answer 1

Explanation:

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Answer 2

Answer:

factorise X^2-4x-5

Explanation:

x^2-4x-5

using quadratic equation

(-b+/-√(b^2-4ac))/2a

(4+/-√(16+4*1*5))/2

(4+/-√36)/2

(4+/-6)/2

condition 1

(4+6)/2= 10/2=5

or (4-6)/2= -1

so x = 5,-1