x²+10x+20
factorise.........
Answers
Answered by
0
Answer:
x^2 + 10x + 20
x^2 +5x + 4x + 20
x (x+5) +4 (x+5)
(x+5)(x+4)
Answered by
2
Factorise.❤️
First multiply last and first term
i.e
Then in
split the middle term ,so that two number sum or subtract would be 10x and multiple of same number be 20x²
x²+10x+20
x²+10x+10x+20
x(x+10)+10(x+10)
(x+10)(x+10)
x+10=0
x=(-10,-10)
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