Question

simplify a) (2.5p-1.5q)²-(1.5p-2.5q)².
B)(7a-8b)²+(7a+8b)².
C) (2p-1)(2p+1)(4p²+1)

Answer 1

B) (49a^2-112ab+64b^2)+(49a^2+112ab+64b^2)
=49a^2+64b^2+49a^2+64b^2
=161a^2+128b^2 (answer)