Add: a² + b² + c² – 3abc and a² – b² + c² + abc
2 answers:
1. 2a^2+2c^2-2abc
2. -xy^2-2x^2y+3
3. 15x^2+4y-4z^2
4. 2x+2y+3z
5. 3a-c+2b
6. x^2+2xy-4y2
7. Sum of 4b2+5bc ; -2b^2-2bc-2c^2 ; 2bc+4c^2 is (2b^2+2c2)
Sum of 5b^2-c^2 and -3b^2+2bc +c^2 is (2b^2-2bc)
And the subtract of two answers is (2c^2-2bc)
8. 5x+2y-6
9. 3m+6-7q-4p+m^2-3m^3
10. Subtract of (3a^2-5ab^2+2b^2) and (2a^2b-3b^2) is (3a^2-5ab^2-b^2-2a^2b)
Sum of (3ab^2+5b^2-2a^2b) and (a^2b+5a^2-3ab^2) is (5b^2-a^2b+5a^2)
And the subtract of two answers is (6b^2+a^2b+2a^2+5ab^2)
I hope this helped! And if you need to see the solution here it is. I can’t upload other pics (5-7)
2. -xy^2-2x^2y+3
3. 15x^2+4y-4z^2
4. 2x+2y+3z
5. 3a-c+2b
6. x^2+2xy-4y2
7. Sum of 4b2+5bc ; -2b^2-2bc-2c^2 ; 2bc+4c^2 is (2b^2+2c2)
Sum of 5b^2-c^2 and -3b^2+2bc +c^2 is (2b^2-2bc)
And the subtract of two answers is (2c^2-2bc)
8. 5x+2y-6
9. 3m+6-7q-4p+m^2-3m^3
10. Subtract of (3a^2-5ab^2+2b^2) and (2a^2b-3b^2) is (3a^2-5ab^2-b^2-2a^2b)
Sum of (3ab^2+5b^2-2a^2b) and (a^2b+5a^2-3ab^2) is (5b^2-a^2b+5a^2)
And the subtract of two answers is (6b^2+a^2b+2a^2+5ab^2)
I hope this helped! And if you need to see the solution here it is. I can’t upload other pics (5-7)
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