3 years ago

4x - y + 7x y simplfy the expression

Mathematics

1 answer:

-Dominant- [34]3 years ago

5 0

Answer:

${ \tt{4x - y + 7xy}} \\ \\ \dashrightarrow \:{ \tt{4x - y(1 - 7x)}}$

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A golfers score after playing on friday was +2

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2 years ago

Which of the following are roots of the polynomial function?

Bingel [31]

Answer:

1 and -5

Step-by-step explanation:

$~~~~~x^3+3x^2-9x+5=0\\\\\implies x^3-x^2+4x^2-4x-5x+5=0\\\\\implies x^2(x-1)+4x(x-1)-5(x-1)=0\\\\\implies (x-1)(x^2 +4x -5) = 0\\\\\implies (x-1)(x^2+5x -x -5) = 0\\\\\implies (x-1)[x(x+5) -(x+5)] =0\\\\\implies (x-1)(x-1)(x+5)= 0\\\\\implies (x-1)^2(x+5) = 0\\\\\implies x = 1,~~ x = -5$