Question

(x-5y-3z)^2

Answer 1

\[a^{2} = a \times a\]
similary,

(x-5y-3z)^2 = (x-5y-3z) x (x-5y-3z)
evaluate it to obtain the result

Answer 2

of course, then what?

Answer 3

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Answer 4

a(a+b+c) = a*a + a*b + a*c

(a+b)(a+b+c) = a*a +a*b + a*c + b*a + b*b + b*c

(a+b+c)(a+b+c) = a*a + a*b + a*c + b*a + b*b + b*c + c*a + c*b + c*c

i hope you are able see how it works

Answer 5

(a-b-c)^2=a^2+b^2+c^2-2ab-2bc-2ca

Answer 6

I did this. but it seems like a really long answer. Did you get x^2-10yx-6zx-5yx+25y^2+30zy +9z^2 ?

Answer 7

the answer will be x^2+25y^2+9z^2-5xy-15yz-3zx

Answer 8

This is more frustrating than helpful but thanks for trying.

Answer 9

hahaha just try universal solution..?

Answer 10

its actually pretty simple
you have three terms in your question lets name them a, b and c
so the question becomes (a-b-c)^2

which can also be written as (a-b-c)(a-b-c)
or a(a-b-c) - b(a-b-c) - c(a-b-c)
(you have to multiply each term with all the other terms)

similarly your question would simplify to
x(x-5y-3z) - 5y(x-5y-3z) - 3z(x-5y-3z)

Answer 11

That is what I did

Answer 12

x^2-5xy-3xz - 5xy+25y^2 +15yz -3xz+15yz+9z^2
x^2 -5xy -5xy -3xz-3xz +25y^2 +15yz+15yz+9z^2

x^2-10xy -6xz +25y^2 +30yz+9z^2
is the solution