neilkosalge2009 neilkosalge2009

21-02-2022
Mathematics

contestada

Write the trinomial as a square of a binomial or as an expression opposite to a square of a binomial: 4cd -25c^2 -0.16d^2

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zsm2800 zsm2800

24-02-2022

Answer:

= -(5c - 0.4d)^2

Step-by-step explanation:

4cd - 25c^2 - 0.16d^2

= 4cd - (5c)^2 - (0.4d)^2

= -[(5c)^2 -2*5*0.4cd + (0.4d)^2]

= -[(5c)62 - 2*(5c)*(0.4d) + 0.4d)^2]

= -(5c - 0.4d)^2

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