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DaniilM [7]
3 years ago
5

6 Factorise x2 + 6x -7

Mathematics
2 answers:
vaieri [72.5K]3 years ago
8 0

Answer:

(x+7)(x-1)

Step-by-step explanation:

x^2 + 6x -7

so here we need two number that give 7 when multiplied and 6 when subtracted

7 and 1 are the numbers because

7*1=7  and ,

7-1=6  so,

x^2 + (7-1)x -7

x^2 +7x -x -7

take common from first two terms and from third and fourth term

x(x+7)-1(x+7)

take (x+7) as common

(x+7)(x*1 -1*1)

(x+7)(x-1)

julia-pushkina [17]3 years ago
4 0
The answer should be (x-7) (x+1)
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