Use suitable identities to products : (x+4)(x+10)

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2. Polynomials

easy

Use suitable identities to find the products : $(x+4)(x+10)$

Option A

Option B

Option C

Option D

Solution

$(x+4)(x+10)$

Using the identity $(x+a)(x+b)=x^{2}+(a+b) x+a b,$ we have :

$(x+4)(x+10)=x^{2}+(4+10) x+(4 \times 10)=x^{2}+14 x+40$

Standard 9

Mathematics

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