Is 1 +4(3x-10)-12x equivalent to -9

This expression is not equivalent to -9.

Step-by-step explanation:

Given the expression

Use distributive property to eliminate the brackets:

Use commutative property to rearrange the terms:

Hence, this expression is not equivalent to -9.

plants store their excess carbohydrate in the form of starch so that it could be used as energy source later on. the excess carbohydrate is converted into starch in the plastid i.e. chloroplast & this process occurs in the presence of sunlight. it is an insoluble polymer of glucose which gets stored in cell organelles named as amyloplasts. in some plants, starch is also stored in roots and embryos.

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8