15. If a1 and a2 are the sum and product of roots of the quadratic equation 2(x+2)²+ c(x+1)=0, where c is a constant. Show that a1 +a2 = 0

What is the value of x in the equation 2(x-4) = 4(2x + 1)?

Money off coupons have been circulated to 300 households. only 2/5 of these were redeemed (used) in the local supermarket to get a free shampoo. what fraction of coupons were unused? (ps: write how you got the answer)

Agroup of three friends order a combo meal which includes two slices of pizza and a drink each drink is priced at $2.50 the combined total of $31.50 how much is the cost of a slice of pizza