Find the sum of the following algebraic expressions :
`7a^(2) - 5a + 2 , 3a^(2) - 7 , 2a + 9 , 1+ 2a - 5a^(2)`

Find the sum of the following algebraic expressions : 3a - 4b + 5c , 2a + 3b - 6c , - 5a + 8b + 7c

Find the sum of the following algebraic expressions : 3x^(3) - 5x^(2) + 2x + 1 , 3x - 2x^(3) - x^(3) , 2x^(2) - 7x + 9

Find the sum of the following algebraic expressions : 2x^(2) + 4y^(2) + 7 , - 3y^(2) + 8 , -x^(2) -2y^(2) - 2

Find the sum of the following algebraic expressions : 4xy - 3yz + 2zx , 2xy - yz - zx , - xy + 5yz + 6zx

Add the following algebraic expressions : 2a - 3b + 4c , -3a + 2b - 5c , 7a - c and 3b + 6c

Write all the terms of each of the following algebraic expressions : 2-5a+(3)/(2)b

Add the following algebraic expressions : (i) 5x^(3)- 3x + 7 , 2x^(2) - 11 and 7x^(3) - 11x^(2) + 4x- 3

Find the value of each of the following algebraic expressions. 3x - 4y + 9, if x = 5 and y = -2

Add the algebraic expressions: 2/3a ,3/5a ,-6/5a

Write the number of terms in each of the following algebraic expressions : 2x-:2y-7x^(2)+3