(iii) 574 - 7x2 + 8x - 1 + 3x39x2 + 7 - 3x4 + 11x - 2 + 8x2(iv) -m2 + 5mn from 4m2 - 3mn +88. From the sum of 4 + 3x and 5 - 4x + 2x2, subtract the sum of 3x2 - 5x and10. What should be subtracted from - 7mn + 2m2 + 3n2 to get m2 + 2mn + n2?13. What should be taken away from 3x2 - 4y2 + 5xy + 20 to obtain - x2 - y2 + 6xy + 20?14. From the sum of 2y2 + 3yz, - y_ - yz - z2 and yz + 2z2, subtract the sum of 3y2 - 22X, 2x² - 7x + 9seba + 2, 3a? - 7, 2a + 9,1 + 2a - 5a2.5. Simplify the following:(i) 2x2 + 3y2 - 5xy + 5x2 - y2 + 6xy - 3x2(ii) 3xy2 - 5x²y + 7xy - 8xy2 - 4xy + 6x²y(ii) -7xy from -2xy6. Subtract:(i) -5y2 from y2(iii) alb - 5) from b(5 - a)(v) 5a2 - 7ab + 5b2 from 3ab - 2a2 - 262(vi) 4pq - 5q2 – 3p2 from 5p2 + 392 - pq(vii) 7xy + 5x2 – 7y2 + 3 from 7x2 - 8xy + 3y2 - 5(viii) 2x4 - 7x2 + 5x + 3 from x4 - 3x3 - 2x2 + 3.7. Subtract p - 2q + r from the sum of 10p - r and 5p + 29.- x² + 2x + 5.9. What should be added to x2 - y2 + 2xy to obtain x2 + y2 + 5xy?11. How much is y4 – 12y2 + y + 14 greater than 1743 + 34y2 – 517 +68?12. How much does 93 p2 - 55p + 4 exceed 13p3 – 5p2 + 17p – 90?and - y2 + y2 + z2.VALUE OF AN ALGEBRAIC EXPRESSIONAn algebraic expression contains onemoro Tariables (literals) which repres​