Question

factorize: 40-3x-x^2
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Answer 1

Answer:

x=5 or x=-8

Step-by-step explanation:

-x^2-3x+40=0

multiply whole equation by '-'

x^2+3x-40=0

x^2-5x+8x-40=0

x(x-5) +8(x-5) =0

therefore,

x=5 or x=-8