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Sahil multiplies $(x + a) (x + b)$ and obtains $x^{2} + 7 x + 10$ .
Both a and $b$ are positive whole numbers.
What is the value of a $x b$ (the product)?

Class 9Factor Theorem and FactorisationPolynomials

A11
B10
C9
D20

Step-by-Step Solution

Comparing,

a + b = 7

and a

x b = 10

, giving

a = 2, b = 5

. The product a

x b = 10

.

Answer: B) 10

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