2/7(14x2-21 2) (-5x2-3y2) simplify
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I think this is your question
2/7(14x^2-21y^2) (-5x^2-3y^2)
Answer for this question is
2/7×7(2x^2-3y^2)(-5x^2-3y^2)
=2(2x^2-3y^2)×(-5x^2-3y^2)
=(4x^2-6y^2)(-5x^2-3y^2)
= -20x^4-12x^2y^2+30x^2y^2+18y^4
= -20x^4-18x^2y^2+18y^4
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