Question

i didn't understand
pls help me solve it with steps

Answer 1

Answer:

65

Step-by-step explanation:

see the image for explanation.......

Answer 2

ANSWER :-

65

Given -

• Algebraic expression = 1- 4x(yz + 3xy)

• Value for x = 2, y = -1 and z = 2

To find -

• The value of the above Algerbraic expression.

Solution -

→ 1 - 4(2)[(-1)(2) + 3(2)(-1)]

→ 1 - 8 [(-2) + (-6)]

→ 1 - 8 (-8)

→ 1 + 64

→ 65 Ans

Procedure -

• This question is from the Algebraic identites.

• In this question we are given with an Algerbraic expression and with the values of x,y and z.

• In this question we will put 2 in place of x , -1 in place of y and 2 in place of z and then we will equate the whole value.

• First we will solve the values given inside the braket, which will be RHS and we wil multiply 4 with 2 which will be 8 and will write it as 1 - 8 which will be called as LHS.

• We will keep the LHS part the same after getting a final answer in RHS in the last we will add 1 + 64 $\therefore$ will be give the value 65.

• Remember that :-

• (+)(-) = -

• (-)(-) = +

• (+)(+) = +

• (-)(+) = -

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