Find the product (a–b–c)(a^2+b^2+c^2–ab+bc–ca) without actual multiplication???
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HEY....
HERE IS YOUR ANSWER.
the identity used here WILL BE
[X+Y+Z] [X SQ. + Y SQ. + Z SQ. --XY -- YZ -- ZX] =
X^3 + y^3 + Z^3 -- 3xyz
now according to the question y = -- b
z = --c
therefore the answer will be
a^3 -- b^3 -- c^3 -- 3 * a * --b * --c...
hope helped..
HERE IS YOUR ANSWER.
the identity used here WILL BE
[X+Y+Z] [X SQ. + Y SQ. + Z SQ. --XY -- YZ -- ZX] =
X^3 + y^3 + Z^3 -- 3xyz
now according to the question y = -- b
z = --c
therefore the answer will be
a^3 -- b^3 -- c^3 -- 3 * a * --b * --c...
hope helped..
anu522:
plz mrk brainliest
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