Use suitable identities to find the following products: from M

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 Multiple Choice QuestionsShort Answer Type

141. Check whether (p + 1) is a factor of (p100 - 1) and (p100 - 1). 
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142. Factorise: 3u3 + 4u2 - 12u + 16.
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143. Find if remainder obtained on dividing polynomial p(y) = y3 + ay2 + 5y - 25 by (y + a) is a factor of polynomial f(a) = a2 -5a + 25.
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144.  If (2x - 3) is a factor of 2x4 - 3x2 + 15x - 15k, find the value of open parentheses 3 straight k minus square root of 5 space straight k close parentheses.
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145.

Use suitable identities to find the following products:

(i) (x + 4)(x + 10) 

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146.

Use suitable identities to find the following products:

(x + 8)(x - 10)

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147.

Use suitable identities to find the following products:

 (3x + 4)(3x - 5)

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148.

Use suitable identities to find the following products:

open parentheses straight y squared plus 3 over 2 close parentheses open parentheses y squared minus 3 over 2 close parentheses


open parentheses straight y squared plus 3 over 2 close parentheses open parentheses straight y squared minus 3 over 2 close parentheses
open parentheses straight y squared plus 3 over 2 close parentheses open parentheses y squared minus 3 over 2 close parentheses equals open parentheses z plus 3 over 2 close parentheses open parentheses z minus 3 over 2 close parentheses
space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space vertical line space w h e r e space y squared equals z
equals space left parenthesis z right parenthesis squared minus open parentheses 3 over 2 close parentheses squared
space space space space space space space space space vertical line space Using space Identity space III
equals space straight z squared minus 9 over 4 equals left parenthesis straight y squared right parenthesis squared minus 9 over 4
space space space space space space space space space space space space space space space space space
                  | Substituting the value of z
equals straight y to the power of 4 minus 9 over 4.
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149.

Use suitable identities to find the following products:
(3 - 2x)(3 + 2x)

 

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150. Evaluate the following products without multiplying directly:
103 × 107 
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