Question

Q4.The divisor of m²-7m-18 is : m-9 m-6. m-2 m+9

Answer 1

Answer:

Divisor of m²-7m-18 is (m +2) and (m - 9)

Step-by-step explanation:

==: m² - 7m - 18 = 0

==: m² - 9m + 2m - 18 = 0

==: m (m - 9) + 2 (m - 9)

==: (m - 9) (m + 2)

Hence divisor of m²-7m-18 is (m +2) and (m - 9)

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Answer 2

Given:

m²-7m-18

To find:

The divisor

Solution:

The required value of the divisor is m-9.

We can obtain the expression's divisors by factorizing it.

The factors can be obtained by rewriting the constant term as a product of its factors that also give the middle term on subtracting.

So, the expression= m²-7m-18

We will write it as follows-

=m²-7m-2×9

=m²-9m+2m-18

Now we will take out the common terms to form the brackets containing the factors.

=m(m-9)+2(m-9)

=(m-9)(m+2)

So, the two factors are m-9 and m+2.

The expression can be divided by m-9 to get m+2.

Therefore, the required value of the divisor is m-9.