When 5 is subtracted from the square of a number ,the results is 4 times the number. find the negative solution

x=-1

Step-by-step explanation:

To find this

We assume the number is x

The square of the number=x^2

Therefore when 5 is subtracted from the number we get

x^2-5=4× the number x

x^2-5=4x

X^2-4x-5

To factorise

x^2-5x+x-5

(x^2-5x)+(x-5)

x(x-5)+1(x-5)=0

(x+1)(x-5)=0

To find the negative solution

(x+1)=0or (x-5)=0

x=-1

1) c 2143.6 cm

2) c 113.0 m

3) a 33.5 ft

4)   d 2 cm

5) c 20 mm

6) 180 in

7) d 120 ft

pla·gia·rism

/ˈplājəˌrizəm/

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noun

the practice of taking someone else's work or ideas and passing them off as one's own.

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