108 Easy Algebra Step-by-Step
Step 2. Do multiplication: () 21 x (^1) () 343 x.
= 61 xx^2 − 1114 + +xx^2 − 21 x+
Step 3. Simplify the results.
= 71 xx^2 − 1353 +
Step 4. Review the main steps.
() 21 x 1 () 343 x +()xx− 112 666 xx^22 − 1111 xx+ 44444 22 xxx+ 17177 x^2 − 13 x+ 5
e. 24 xx^2 [( 35 x 555 xx− 4 )]
Step 1. Simplify within the brackets. First, do multiplication: 5 ()x 4.
24 xx^2 [] 3 x+−
= 24 xx^2 − − []+ −
Step 2. Simplify 35 xx 555 x− 20 within the brackets.
= 24 xx^2 − − []−
Step 3. Do multiplication: − 4 [][ −
= 2 xx^2 − −+ 32 x 80
Step 4. Simplify the result.
= 28 x^2 − x+ 0
Step 5. Review the main steps.
24 xx^224 [] 335 x 5555 ()xx− 44 222 xxx− 44 [] 33 xxx+ 525 0
= 24 xx^2 − − []−
= 23 xx^228 x 0 = 23 xx^2333333380
f. 2 () 12
Step 1. Do the power: ()x+^2.
= (^2) ()++ +
(^2) ()x 1122 ≠() 222222 x+. The exponent
applies only to ()x+ ).