Question

frame the word problem of quadratic equations if one of the answer is 10​

Answer 1

Answer:

rima scored 10marks more in the second unit test than that in the first unit test. 5times the Marks in the second unit test is equal to the square of the Marks in the first unit test. find her score in the first unit test.

Step-by-step explanation:

let rima scored x marks in the first unit test

then she scored (x+10)marks in the second unit test.

5times the marks in the second unit test=5(x+10)

the square of the Marks in the first unit test=xsquare

from given condition,

5(x+10)=x^

x^=5x+50

x^-5x-50=0

x^-10x+5x-50=0

x(x-10)+5(x-10)=0

(x-10)(x+5)=0

x-10=0orx+5=0

x=10or x=-5

but the Marks cannot be negative

hence x=-5 is unacceptable

x=10