Question

Show
that (2x + 5)² - 40x=(2x-5)
${2}$
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Answer 1

Step-by-step explanation:

we know that (a+b)^2= a^2+b^2+2ab

=(2x)^2+(5)^2+2(2x)(5)-40x

=(2x)^2+(5)^2+20x-40x

=(2x)^2+(5)^2-20x

=(2x)^2+(5)^2-2(2x)(5). we know that (a-b)^2= a^2+b^2+2ab

=(2x-5)^2

Answer 2

Answer:

Step-by-step explanation:

2x + 5x5 - 40x = 2x - 5x5

2x + 25 - 40x = 2x - 25

25 - 40x - 2x = 2x - 25

25 - x(40-2)= 2x - 25

25 - 38x = 2x - 25

= 2x + 38x - 25 -25

=x(2 + 38) -0

=40x

hope it helps u