Question

pls solve free brainliest for correct answer

Answer 1

Answer:

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Answer 2

Answer:

1)=Here, the two values of x are=3, 7

2)=Here, value of x=308.

Step-by-step explanation:

Here, As per our given question,

=(1.)=x^2-10x+21=0

On splitting the middle term, we get,

=x^2-3x-7x+21=0

=x(x-3)-7(x-3) (On taking common, we get it)

=(x-3) , (x-7)

=x-3=0, x-7=0

=x=3 , x=7

Hence, the two values of x are 3, 7.

(2)=As given in question,

=x is directly proprtional to y,

=x=154, =y=7

Now, According to question, y is doubled(from 7 to 14), So, value of x=154 would also be doubled as x and y are directly proportional,

=x=154×2

=x=308 (Answer).

Thank you.