Question

we have learned the use of has to, have to and had to. let us make two sentences each, using them: ​

Answer 1

Explanation:

$\huge{\green{\underline{\underline{\tt{Solution:}}}}}$

Given,

☞ x = -1

Let, P(x) = 5x-4x²+3

$→\;{\sf{P(-1) = 5(-1)-4(-1)²+3}}$

$→\;{\sf{P(-1) = -5-4(+1)+3}}$

$→\;{\sf{P(-1) = -5-4+3}}$

$→\;{\sf{P(-1) = -9+3}}$

$➝\;\red{\bf{P(-1) = -6}}$

Hope It Helps You ✌️

$\huge\underbrace{\green{\tt{\diamond\; Solution:}}}$

Let

Total Pocket Money be 'x'

Now, Savings = 30% of x

$→\;\Large{\frac{30}{100}×x}$

☞ $→\;\Large{\frac{30x}{100}}$

Given,

Amount Spend = Rs. 280.

$→\;\Large{\sf{x - \frac{30x}{100} = 280}}$

Answer 2

Answer:

we have learned the use of plants fo making medicines and have to and had to use them for making medicines in the future too.

we have learned the use of electricity for doing work and have to and had to use electricity for our works in the future too