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Find the value using suitable identity:
$(x+3)( x-5)$
Given:
$(x+3)(x-5)$
To do:
We have to solve the given expression using a suitable identity.
Solution:
We know that,
$(a+b)(c+d)=a(c+d)+b(c+d)=ac+ad+bc+bd$
Therefore,
$(x+3)(x-5)=x \times x+x \times (-5)+3\times x+3\times(-5)$
$=x^2-5x+3x-15$
$=x^2-2x-15$Advertisements